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The act of giggling with and whispering to your partner instead of doing anything that's actually sexual or romantic. May or may not include headbutting. Once in a great while a "gigglegasm" may be achieved, but this is rare. Faking a "gigglegasm" is also commonplace.
"It is very awkward when my roomate and her boyfriend have giggle sex while I'm in the room"
by The Gigglegasm Donor March 23, 2007