= Have sex with him/her/it.

An expression used to declare one's desire to have coitus with someone, coming from the verb 'Tap', which, in this context, is similar and related to screw, i.e. to put a thread on a piece of metal, or to insert said screw into a receptive orifice.
'That' replaces 'him' or 'her', suggesting the receiver of the screwing is just an object, to be sexually used and then cast aside.
"I'd SO tap that!" - By golly, I would very much like to slip my man-servant inside that fine filly!

"Tap thaaaat!" - Holy smokes that person needs a jolly good smashing.

"Would you tap that shit?"
"Indubitably!"
by Dry_Ice July 20, 2012
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to have an object readily available or easily obtained

derived from having "tap" water always available
Example 1:
Why do you buy bottled water? You got that on tap at the crib.

Example 2:
That guy is such a player. He's got bitches on tap 24/7.
by Mizzaxx March 3, 2010
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Tapped is a word to describe someone who is dosey and messed up at the same time.
You were just taking a walk and a brick fell onto your head, you get no surgery after and stay the way you are.
Tapped is how you would be after, dosey, tapped, messed up
by TaPpEd ToNkIn August 31, 2018
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to stick one's penis into; fuck
While checking out a girl: "Oo, I'd tap that."
by Dmac April 8, 2005
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1. If I could just tap that ass once...
2. I tapped that ass and it was great.
by Obe July 13, 2003
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Yooooo! That Gormeesha is tapped
by GORMEESHA March 26, 2021
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I wouldn't fuck with that kid he's tapped
by K-Slay May 28, 2007
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