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8.
British way to agree. (The opposite of "Baaaaaa" when in disagreement)
"Now, all in favor for passing the Harry Potter Owns Twilight act -"

Numerous bangings on desks to show approval

"Alright, I guess I'd tap that"
by TheHarryPotterNinja April 19, 2010
 
9.
a phrase meaning you like something or someone.
Annabel Parker <i'd tap that!
by Mirandary November 18, 2007
 
10.
when someone uses it to joke around, or when someone likes what they see, they say i'd tap that as in that'd like to be with that person. not any sexual intercourse.
i'd like to tap that homiee .so yeah, i'd tap that.
by mariiellen = ) March 21, 2006