When you're midway through a sexual act and you're about to ejaculate, however, to prolong your sexual stamina you tense your entire body and accidentally sh*t your pants.
Barry: Oh my god I totally ended up having a Northumbrian Spasm last night!
Carl: Ah man! I bet it went everywhere!
The act of ejaculating during an epileptic seizure
My boyfriend had an epileptic seizure during sex and ended up pulling a spasm-gasm all over my face
The tangy and zingy sensation a person gets in their mouth when they eat something really sour .
Sylvester : Dude you should've the look on my bro's face after he ate that warhead !
Stanley : I heard bro ! Apparently he had a major citric spasm lol