What is Helsinki Hand Grenade?
1.
when someone is fingering someone elses ass hole and inserts their entire fist and then spreads it out, causing the other person to feel like something exploded inside them like a hand grenade.
That girl made me mad last night so i gave her the helsinki hand grenade.
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A small ass city in Michigan. Two hours away from Detroit. Where all there is to do there is get high and watch the pistons and the sorr..
