look up any word, like timebomb:
 
1.
A day when a girls want's only anal sex.
Possibly because she's on her period or not on birth control or maybes she's just a slut.
No Pussy for me, It's an "Anal Day".
by assman08 December 24, 2008
 
2.
situated on January 12th every other leap year anal day is a day where people can gather in groups of no more than 7 but no less than four to discuss and practice the art of anal sex.
Dan: is anal day coming up soon
Ewan: yes, I love anal sex
by pussymuncher04 February 02, 2013