That's from a bar called 'Dick's' in Vegas. They write insults on butcher paper, make a hat out of it, then stick it on your head. They are also super rude to you in other ways.
There IS a reasonable explanation for this... It's actually a paper hat (it's supposed to resemble a condom but they obviously don't) from a restaurant on the San Antonio riverwalk called Dick's Last Resort. The obscenity from servers and other patrons is a gimmick. It's definitely entertaining but the food is shitty. At least it's acceptable to say so as colorfully as you can.