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1.
The vaginal contractions that occur during intense female orgasms. This exerts pressure on the penis causing tremendous pleasure for everyone!
"Ooohh Ahhhh oooooohhhh YESSS"... Now THAT was a HUGE gasm spasm.
by Ian Lawless June 18, 2006
 
2.
muscle spasms in a female through out her entire body due to an intense orgasm
I made her cum so hard last night , she could not move after all the gasm spasms
by nova210 February 28, 2009