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An orgasm so intense, it triggers seizure-like movements such as rapid shaking or trembling, often followed by passing out and becoming unresponsive for a few minutes.orgasm
Me: Wow! That was incredible. I haven't cum like that in quite a while.

Her: Yeah, you had a real seizuregasm there. I was gonna call 911 because you were shaking so much and passed the fuck out for 6 whole minutes! What's your name again?
by madpilot66 April 01, 2011
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What happens when something is amazingly wonderful that it makes you orgasm, but is so out there and random that it gives you a violent seizure.
Dude, that just gave me a seizuregasm.
by LeafeLillith April 18, 2009
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