Top Definition
That feeling you get right as you're about to fall asleep, where you feel as if you are falling, so you jerk yourself awake while making a yelping sound combined with the sensation of spontaneous orgasm.
Right as Megan was about to fall asleep, she suddenly jerked awake and experienced a yelpgasm due to the sudden excitement.
by Cheesepack92 November 16, 2009
5 Words related to Yelpgasm

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