Top Definition
when a typically nice, friendly female has short, intense bursts of bitchy behavior
"What's wrong with Lisa?"

"I don't know. She's always in such a good mood but everytime I even look at her she has a cuntasm and turns into a bitch."
ayon kay Hoot Clark ika-02 ng Disyembre, 2009
Cuntasm is an occurance when a female, or very feminine male, get's overly excited about a seemingly small, to the average person, disagreement.
"Damn bitch, calm the fuck down, don't have a damn cuntasm!"
ayon kay jamaal.a.manic ika-30 ng Abril, 2009
Sarcasm and Negativity rolled into one.
"Why can't I borrow your Scissors dude, i need them for not even 4 seconds..."

"If you weren't so great at cutting yourself, i would"

"your Cuntasm knows no bounds"
ayon kay WIdeOn3000 ika-20 ng Setyembre, 2016
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