Top Definition
When a male has a partial erection caused by observing a women that rates from 5 to 7 on the standard hottie scale. Secondary effects include, when a male in mildly interested in some object or event.
Hey brah, that chick over there is totally giving me a partial chubb.

Oh man, lastnight I had a partial chubb over this sweet ride I saw at the bar.
by BoneSoaker July 10, 2014
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