These exist. And that's sad. [Be warned some are offensive.]
Ohio State's Mascot Raping Michigan's Mascot
(via Deadspin)
Why: I'd like to think that rape (even by mascots) is something we can all agree is terrible, regardless of which team you root for.
A Penis Wearing A Giants Helmet
(via Barstool Sports)
Why: This one was the result of a lost bet, and as such was designed to be as terrible as possible. I have to imagine this is going to make dating difficult for the dummyyoung gentleman who wears it.
Broncos "Tebow Time"
(via Deadspin)
Why: Another lost bet, this one wouldn't be so high on the list if it weren't for the fact that Tebow would be out of Denver less than a year later.
Texas Rangers 2011 World Series Champions
(via Big League Stew)
Why: Because this cocky douche got the tattoo before last year's playoffs were over, and though the Rangers did appear in the World Series, they lost. I thank God every day that I don't have a Cleveland Indians 1997 World Series Champs tattoo.