On the 13th of February, (day before valentines day) Go ahead without even telling a SINGLE soul and go to your ex's house or wherever she is, and give her the most Undeniable slap of a lifetime to her. that'll do it!
"Oh boy! i can't wait to slap my ex on slap your ex day!" as he said in his mind...
by OnlyKent February 9, 2021
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On May 13th it’s

Nation slap your Ex day! Have you ever had that one ex that treated you so badly or cheated on you? Well your in luck because today is that day!
“Did you see that girl slap her ex today?” “Yeah I did it must be national slap your Ex day!” “I’ll be right back...”
by ACB_SMS April 21, 2019
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National slap your ex day is on October 30

It's when you slap your ex on any part of his/hers body ;))

(Am I doing you a favor?)
You: hey -name- it National Slap Your Ex Day..ya know what that means ;)

Ex: Shi-
-SLAP-

...(THE END)...LMFAOOO
by oOf me (♡) October 24, 2019
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