Plunger water 

Water that comes back up out of a drain, mainly by a plunger.

I plunged the shit out of the bathtub drain and when I stopped fuckin plunger water came up and hit my face.

Plunger water by Jeffrey Moritz Jr December 17, 2008

Plunge a watermelon 

When you lose a large anal bead in somebody's butt and have to fish it out.

I was pleasuring my fuck budy with her string of anal beads when one broke off inside of her. That was the first time I had to plunge a watermelon.

Plunge a watermelon by DaSaltySailinTruthSerum September 3, 2016