The state of one's anus when smeared poo bits create a burning or itching sensation in and around the rim of the asshole. The best cure for poop butt is a thorough soapy washing. Poop butt is easily avoided if one wipes with enough vigor and strength to remove all the lingering poo.
Person 1: Oh god, I have poop butt!
Person 2: Wipe it!
Person 1: It's too late! I'm just gunna go take a shower.
Person 2: Showering is indeed the best cure for poop butt!
An omgasm is when someone goes OMGOGMOGMOMGOGMOMGOMGOMGOMGOGMOGMOGM on the Internet. Commonly used by retarded 8th graders who think they know how to use the Internet, but really just found a keyboard on the ground and started hitting it.