If you mean funny, as INCREDIBLY bad, so bad you wanna wet ur pantsand then rofl, then lets see...
um...
Any Jonas Bros
Lady Gaga Poker Face
Any Mily Cyrus
Soulja Boy
Flo Rida Low
Morbid Angel, Necrophagist, and any other Death Metal (Sounds like the singers trying to puke but just cant and is being ampd lol)
Boom Boom Pow (Gotta Get That THIS SONG SUX!!!)
Essentially any itunes top 10 + death metal
But for songs that make you laugh cuz there remotely funny
Baseball/Football George Carlin
Eat It Weird Al
D*** in a Box Lonely Island (Lol idk if that word is allowed but im playin it safe lol)
Furroshi