Hooking up with a frump. Like hogging, but with a bagger or butterface instead of a fat chick. Making it with an ugly or homely girl; screwing a frumpet.

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It is when the penis is semi erect and is still able to flap around you slap your sexual partner with it while releasing cemin.

The attitude that often comes with Frump. Frumppy girls usually have bad attitudes, make gross frump faces of being upset(typically pursing/curling the lips the frumpier the state) and speak with a nasal tone which increases with level of frump. Frump can be used for girls and guys.

The act of smelling a females bike seat after frequent sweaty use.

(verb) A sexual act performed by two persons with a combined weight of over 400 pounds.

The act of frumping is, when submerged in a pool, bathtub, lake, or any body of water, to fart underwater and eat the bubbles before they hit the surface. This doesn't have to be a one-person activity either.