I've been listening to country music recently and it definitely spans a much wider range of topics than most other genres. Possibly because of this and a general attitude of not taking oneself too seriously, the funniest or most unusual song titles are found in country music.
Here is the list of the funniest or most unusual real country song titles I have come across.
Ticks by Brad Paisley
"I'd like to check you for ticks"
"Don't worry babe I've got your back
And I've also got your front"
"The only thing allowed to crawl all over you
when we get there is me."
She Thinks My Tractor's Sexy by Kenny Chesney
http://www.google.com/search?q=brad+paisley+online | Online by Brad Paisley
"Cause even on a slow day I could have a three way Chat with two women at one time" "When you got my kind of stats It’s hard to get a date Let alone a real girlfriend But I grow another foot and I lose a bunch of weight Every time I login"