Oops, it doesn't look like 'ass slap day' is a national day..

Other days

ruby

Ruby Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

first love

First Love Day

comfy

Comfy Day

embarrass your best friend

Embarrass Your Best Friend Day

nail polish

Nail Polish Day

stress awareness

Stress Awareness Day

Emoji Day

tulip

Tulip Day

prosecco

Prosecco Day