30. And You Thought Steroids Were Bad For Your Balls

Who: Jose Canseco, Retired Baseball Player
Offending Tweet: @JoseCanseco: "Just came back from horse riding with my daughter & GF. My ass is chapped & my balls are bruised! Damn i hate riding horses....."
Date: 1/31/2010
Consequence: Embarrassed

At least there's no twitpic on this one.