Top Definition
The art of placing one's clenched fist inside another human being. Once inside, opening the palm and 'twiddling' one's fingers.
Fat: I well got spiderbombed last night!

Slag: Did you? What's it like?

Fat: Imagine fisting, but they tickle you with their fingers at the same time.
by Spider-Bomb_Artiste September 29, 2007

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