Top Definition
n. (wŭn-pŭmp)

1. A woman so incredibly sexy that the mere sight of her makes male ejaculation possible utilizing only a single inward stroke (or pump) of the penis shaft.

2. The very highest (and rarest) level of a rating system used to determine the attractiveness of a female based on how many strokes of the penis shaft occur before ejaculation.
Woah! You just missed a total 1-Pump dude!
by JQF2.0 November 26, 2010

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