Tubledging 

The act of thrusting your erect penis onto the ledge of a bathtub. It is a form of masturbation

Yo that kid spencer was Tubledging so hard his dick almost fell off

Tubledging by Bigdddaddy69@bbc May 17, 2016

tub ledging 

rubbing against the edge of a bathtub as a form of masturbation

Person 1: Dude, my friend Spencer told me he rubs himself on a tub to get off!

Person 2: I think that's called tub ledging

tub ledging by Anonymous12385838228384872 July 10, 2016

tub ledging 

The act of rubbing oneself on the side of a tub to get off, a form of masturbation

Person 1: dude what the hell is tub ledging?
Person 2: oh that's a way of jerking off. My friend Spencer does it all the time.

tub ledging by Anonymous12385838228384872 July 8, 2016