📐 Custom Personalized Flag made with Flagmaker & Print. Learn more about our product line-up on the Product Details page. This custom flag design is available as both a one-sided wall flag, or a double-sided display flag
🎌 All our personalized flags are available in multiple sizes and finishing options. If you have special requests, don't hesitate to reach out to us!
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The “Sometimes Reasonable Men Must Do Unreasonable Things” flag is a modern internet meme flag referencing the figure commonly known as the Killdozer Guy, a nickname associated with Marvin Heemeyer and the heavily modified bulldozer used during the 2004 Granby, Colorado incident. The flag features a black field with a stylized illustration of an armored bulldozer equipped with a front blade and protective plating. Above and below the vehicle appears the phrase “SOMETIMES REASONABLE MEN MUST DO UNREASONABLE THINGS,” a quote widely attributed in internet culture to the individual involved in the event. The design typically uses high-contrast gold or yellow graphics and lettering against the dark background, emphasizing the industrial imagery and the stark tone of the quotation.
The flag emerged primarily in online communities and meme culture during the 2010s and 2020s, where the Granby incident became a widely discussed subject across forums, documentaries, and social media. In this context, the bulldozer illustration and accompanying quote are used as a symbolic or ironic commentary on personal grievance, defiance against perceived injustice, or extreme protest. As a result, the flag is generally categorized as a meme flag rather than a traditional heraldic or political banner, circulating mainly as novelty merchandise, digital artwork, and internet satire tied to American contemporary folklore surrounding the so-called “Killdozer” story.
Flagmaker & Print is the easiest way to design and print your flag online. Try out our custom flag maker!
Questions about customizing your flag? Check out our guides!
Info about flag prices, materials, sizes? Check out our Product Details & Frequently Asked Questions
Flag Models? All Flag Types Compared
Special requests? Contact us
Product Origin & Shipping FAQ
Every Flagmaker & Print flag is made to order. If you order today, your custom flag will arrive between and . Discover more about how custom flags are made.
📐 Custom Personalized Flag made with Flagmaker & Print. Learn more about our product line-up on the Product Details page. This custom flag design is available as both a one-sided wall flag, or a double-sided display flag
🎌 All our personalized flags are available in multiple sizes and finishing options. If you have special requests, don't hesitate to reach out to us!
✒️
The “Sometimes Reasonable Men Must Do Unreasonable Things” flag is a modern internet meme flag referencing the figure commonly known as the Killdozer Guy, a nickname associated with Marvin Heemeyer and the heavily modified bulldozer used during the 2004 Granby, Colorado incident. The flag features a black field with a stylized illustration of an armored bulldozer equipped with a front blade and protective plating. Above and below the vehicle appears the phrase “SOMETIMES REASONABLE MEN MUST DO UNREASONABLE THINGS,” a quote widely attributed in internet culture to the individual involved in the event. The design typically uses high-contrast gold or yellow graphics and lettering against the dark background, emphasizing the industrial imagery and the stark tone of the quotation.
The flag emerged primarily in online communities and meme culture during the 2010s and 2020s, where the Granby incident became a widely discussed subject across forums, documentaries, and social media. In this context, the bulldozer illustration and accompanying quote are used as a symbolic or ironic commentary on personal grievance, defiance against perceived injustice, or extreme protest. As a result, the flag is generally categorized as a meme flag rather than a traditional heraldic or political banner, circulating mainly as novelty merchandise, digital artwork, and internet satire tied to American contemporary folklore surrounding the so-called “Killdozer” story.
Flagmaker & Print is the easiest way to design and print your flag online. Try out our custom flag maker!
Community Reviews
The easiest way to design & Print your flag online
Flagmaker & Print offers best-in-class custom flags in over 70 sizes and variations. We specialize in small-quantity custom flags, manufacturing everything from 3×5ft outdoor flags to desk and hand-waving flags. Design your own using our built-in flag maker app, or browse a library of 14,000+ ready-made designs.
With a full-suite design service included in your flag price, we're your one-stop shop for custom flags worldwide.
Not happy? money back!
Getting your custom flag design right can be hard! If you feel the final product doesn't quite fit what you had in mind, you are eligible for a full refund or a free replacement print.
What's more, you can always reach out to our support team so we can help you fine-tune and perfect your flag for every occasion!
Crew picks
Discover some of the greatest flags made with the FMP app, selected by our designers
"Always wanted my own Commune of France flag, easy to make with FMP."– Leon (Oregon)
"We loved this flag! Took it on a trip to Pisa. Long live the Danubian Federation!"– The 'Karl Franz Gang'
"Incredible flags - I made my own collection."– Tom (UK)
"Got my Equestria At War flag, for Griffonia!"– Anonymous
"Got this flag, quality was amazing and felt as if it was real."– S.M (US)
"Got a CFSR flag to go with my Communard flags. Lovely as always"– Zachary (NY)
"Really thick and durable, made these for a cosplay."– Ignar (Massachussets)
"Great for outdoors. Long live the People's Front of Judea!"– Eric (California)
