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May 4th. 

May 4th. is slap someone's butt day where you slap whoever's butt you want and not get in trouble! Whether it be a jiggly butt, a soft butt or a hard butt, ANY BUTT COUNTS!
Share to your friends and family so everyone will know!
Rose: *slaps Mark's butt*
Mark: Ouch! What's that for?
Rose: It's National Slap Butt day.
Mark: Oh! I didn't know it was May 4th.!
May 4th. by lana26 October 21, 2019
Related Words
Maya may maybe Mayo mayonnaise may 5th may 10 May 9th may 12 May 14
This is the day when the shinest light was born and it is none other than Kim Dahyun

We consider everyone born on May 28 is a bubbly and energetic person, they're the mood maker of some group or family.
May 28 is #DahyunDay
May 28 by more&moresoty May 11, 2020

May 22nd 

May 22nd is horse cock day!
May 22nd by Joe mom mma May 20, 2020

May 14th 

Guy: Hey guess what its May 14th
Girl: Okay ill show you my ass
May 14th by shut3r May 14, 2021
May 2 is to thank the people who dispose and reuse the waste
may 2 by unseenT June 1, 2018
Asian slang for mayonnaise.
"U wan more MAY-YAY on yo sandwich round-eye?!?"
MAY-YAY by alexcoulson January 2, 2010