The State of relief and euphoia just after unleshing a giant crap(or perfoming "Shock and Awe") from your body... usually accompanied by a long sigh of relaxation as your sphincter retacts to its normal state. Much like the state of relaxation after an orgasm... kinda...
or version 2
when someone gets fucked in the ass sooooooooo good they have an orgasm with little to know genetile stimulation
Girl: Fuck me harder aww yess fuck my asshole deep
guy:you like that cunt you like my dick in your ass
girl: aweyes oh shit im haveing a shitgasm aww fuck im cumming
guy:oh shit me 2
girl:Cum in my ass
guy:*moans* ahhhhh
the wonderful feeling of release caused by dumping a shit either so powerful or forced to be held in until the last possible moment ("the crowning"). Can be either a verb or noun.
He experienced the bliss of a shigasm in the gas station crapper after a 3 hour, Red Bull and french fry road trip
A blend of vertigo, disgust, anger and embarrassment, such as felt when watching one of Microsoft's spectacularly cringeworthy "Windows 7 Launch Party" videos.
Coined by Charlie Brooker writing for the Guardian.
Did you seeMicrosoft's Windows 7 launch party video? It was shitasmic!
I have the most awful case of shitasmia from cringing so much at the goofy acting in that show.