Seen in Half-Life 2 when one gets smacked upside the head by a flying toilet.
Half-Life 2 Deathmach rules
by Valve March 5, 2005
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an extraordinarily large set of nuts that resemble two plums swaying gingerly in a latex glove.
i stopped pumpin the bitch, but my nuts kept swayin like a pendulum from my nacho to her gut
by Els April 3, 2004
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Wearing one's pants so low as to display one's asscrack. Derived from the state of many a fat plumber's pants.
by lesseins July 20, 2008
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To have casual sex with a girl.

derrived from how many pornos involve plumbers.
See that hot girl? I'd totally plumb that.
by rsktod January 8, 2005
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The act of purposefully stopping up your toilet so that the plumber will come to your house and unclog it.
That weirdo gets off on plumbing.
by superchar September 25, 2008
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(verb) Very deep anal penetration
Deep-sea plumbing: Anal penetration over 10 inches
"That horse was plumbing that girl yesterday"
by Stan Albright May 17, 2007
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Plumbing is a sexual act involving a man and a female. The aforementioned male pops his penis in the girl's vagina, lubricating her ring, tickling and widening the said orifice. When that there hole is at maximum size, the man pops the scrotum and both balls in that bottomless pit of love.
That girl last night was a bucket, I was plumbing her without even realising. It was mint.
by googabooga April 29, 2009
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