To Stop the Slot Machine while it's spinning in hopes of winning a jackpot that the machine wasn't going to give you.

I took my sister to go Slap-it at the Casino.
by N8Stylo February 22, 2021
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A dildo that has some form of adhesive, that literally allows it to be slapped on, over the woman's vagina. The infamous danger being it detaching in a compromising position, such as pegging.
Mary stood up slapped on the Slap On and was ready to peg.
by ThatGodTodd October 22, 2014
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The process of putting a pinch of chewing tobacco into ones mouth.
Guy #1 "dude, let's get going, we're gonna miss it."
Guy #2 "hang on yo, I gotta slap in quick."

by Andrew0983 December 19, 2007
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