When you become a massive dickhead to everyone, especially your sibling, just because you were pushed out of a vagina on this day.
by QueenOfRain May 19, 2018

by OhMyLord911 September 14, 2019

The female bumhole, anus, rectum, chocolate starfish, brown lips.
A very polite way to say you had Anal Sex
A very polite way to say you had Anal Sex
I met a girl last night, she let me slip it in the Birthday Hole.... that was a surprise.
When your wife surprises you with the great news that tonight is that one night a year you can stick it in her bumhole.
When your wife surprises you with the great news that tonight is that one night a year you can stick it in her bumhole.
by BuckT March 2, 2022

the act of displaying a close friendship between two friends by getting as undressed as you both feel comfortable and either hugging, snuggling, or any display of affection you feel apropriate. pushing the limits is encouraged.
john and sally get in there underware and hug to show there love & friendship for each other. they are officially birthday suiting
by master69man August 24, 2011

by amilili February 19, 2023

by Bobcart April 23, 2022

Similar to a birthday suit, a birthday tux is one's naked form but polished up for fancier events for which a birthday suit would be inappropriate. A birthday tux is more well trimmed and tanner than a birthday suit.
Valerie: "Are you wearing your birthday suit to the orgy?"
Michelle: "Are you kidding? I'm wearing my birthday tux! I'm going to shine like a diamond!"
Michelle: "Are you kidding? I'm wearing my birthday tux! I'm going to shine like a diamond!"
by Brotogé September 7, 2016
