National Slap Ass Day is on April 16th. Anybody can slap anyone’s ass with no consequences.
Dude it’s National Slap Ass Day so I’m gonna slap her ass.
by Billy Cunningham April 16, 2019
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Slap it, yesterday was grab but today is a new day on April 12th slap it nicely!!
by EVeryday things April 11, 2018
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A one month long holiday where you can slap anyone's ass

It has officially been turned to a month celebration the entire month of April
John:c'mere
*Slap*
You got National slap ass day
by Edge___lord__beat__ April 11, 2019
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It's a few days between Sep. 17 to Sep. 20 have fun.
National Slap Ass Days is were you go around slapping people's asses have fun.
by Keith Trenton September 18, 2019
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