For those of us that like to print stuff with Ludicrous Speed. 

Before anyone asks, yes I did print it with a bad K-value and bed adhesion, but personally I think it adds to the whole “redneck warning” vibe :D. 

This is a remix of the “Customizable Sign” by MakerBot on Thingiverse. → https://www.thingiverse.com/thing:40705