A very very long period of time—longer than a normal day.
Girl: We've been waiting for like TWO ASS DAYS for the cookies to be done.
Guy: Verily
by czaravm December 31, 2011
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A national day for your Lover

Smack there ass, fuck there ass, because it’s national ASS DAY
Today was ASS DAY, so I took my girlfriend”..
by JsjzksnxksksksAN November 4, 2019
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A day in a school, usually Middle or High school, where teenagers go around slapping each others butts for the fun of it. Common for a guy to slap a girl's ass, a girl to slap a guy's, or two female friends to slap each other, but is usually taboo for two guys to do so. Normally occurs on Fridays and the message is often passed through a forwarded text.
FWD: Fwd: Friday is Slap-ass day! forward to all members of *name random high or middle school* in your contact list!
by Tobilollipop September 7, 2009
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Definition of Long Ass Day - noun - Having a very bad day that never seems to end

Or A very crappy day that just won't end.
by Nichole McKnight September 2, 2009
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Taken or not be prepared to get your ass slapped or grabbed all Month of October!!👻
“Yo I jus grabbed jasmines ass it’s national slap ass day
by your local baddie October 2, 2019
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Smack ass day means to smack someone's ass really hard or grab it .basically you just hit someone's but.
by Kehlani PERIOD April 13, 2019
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