Top definition
A man's genital appendage used specifically for undescribable amounts of female pleasure.

Usage of said implement generally results in soaked bedding, and unimpressed roomates.
Girl 1: How was the sex last night?
Girl 2: Well, he pulled out the Thundercawk, and by the end of the night I was leaking like a geyser.
by fuzzyjacket March 12, 2009
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