A giggle-gasm is the cumgasm a
guy sometimes has when his jack-off squire juices him and he blows his
load everywhere - including his mouth.
I'm
Matt's jack-off squire, and he wanted me to do him, so I told him to lie back, hands under his heed, pointing his
toes, and clinching his
butt-cheeks - and I gave him a giggle-gasm!