1 definition by Tolley

Top Definition
The state in which a sudden and immediate erection arises, so unexpectedly and quickly that chodal whiplash is not uncommon
Boy 1: Dude, how'd you break your nose?
Boy 2: I saw Ellen Henson, damn that woman is so hot that I got a massive insta-bone and it sprung up right in my face.
by Tolley August 27, 2003

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