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2.
Laughing so hard you start pissing.
"Man, last week I had such a giggle spurt while watching Lost (BECAUSE IT SUCKS)"
by LikeABosssx February 25, 2010
 
1.
Combining laughing with the act of ejaculation.
"We were engaged in intercourse while Seinfeld played in the background. Unfortunately, George Costanza caused me to become momentary distracted and I shot a gigglespurt. We've mutually agreed that rolling news networks are the only channels suitable during copulation."
by singleflush April 24, 2009