13th Style 

To do as one pleases in an aggressive manner

I'll take whats mine..."13th Style"

13th Style by EvilTimmy June 10, 2011

13th November 

The day of someone born who goes to FEDs and isn’t a pussy

Jack isn’t a 13th November and he went out

13th November by SmoothTesticle October 16, 2019

13th December 

National male nipple day! Commemorate the male mammary glands by sucking a guy's nipple.

Alex:Bro, it's 13th december!!
Matt:And?
Alex:IT'S NATIONAL MALE NIPPLE DAY! Come on, give me that tiddy so i can give it a good suck, no homo
Matt:Fuck it why not. No homo

13th December by John Arbacle October 17, 2019

13th grade 

13 grade aka HACC aka Harrisburg Community College

Nick D. goes to Stanford and isn't smart enough for the 13th grade. So go back to wackin your pud cracka.

13th grade by snoopid December 11, 2003

13th Of March 

It's @hheizou appreciation day! On this day, we appreciate all that @hheizou has done for the community.
Happy birthday, @hheizou!
Go follow @hheizou on TikTok! He's a really cool guy ☺️

@tastychilde: hey, it's the 13th Of March, @hheizou appreciation day! I've gotta tell my friend about this, because he's really cool. I need to appreciate him!!!!!

13th Of March by tastychilde June 5, 2022

13th of December 

The coolest day ever

13th of December , umm . . .

13th of December by whoareyou ? July 10, 2011

13th of may 

International break a rapist’s bones day

Rapist:OW, WHY DID YOU DO THAT
victim: it’s break a rapist’s bones day (aka 13th of may)

13th of may by anonymous April 12, 2021