Lots of candidates have embarrassing things in their past that they'd hate to have flare up in the middle of a presidential campaign. I think we can safely conclude that we have found Rick Santorum's! At the right, cast your eyes upon the tragedy that is Santorum's high school year book photo--specifically, Carmel High School in Mundelein, Illinois, in 1976. (The picture is from Chris Good's compilation of high school year book photos of the 2012 Republican presidential candidates--it's not pretty, although I recommend clicking through.)
Rick Santorum's Tragic Yearbook Photo
Every candidate has a skeleton in his closet. But most don't make you laugh this hard.