The anniversary of the day you started working at a particular business. Not normally celebrated (unless it's a big one like 10 years, 20 years, etc) but sometimes acknowledged by the person, co-workers or the boss.
Because he was a good employee, Jason's boss sent him a Happy Work Birthday e-mail congratulating him on five years of service
Used by rappers and dorky white kids, its your birthday means that you have completed something and your friends (if you have any) and proud of you, resulting in them saying "its your birthday" meaning "Congrats! You've done some ordinary thing that many other people do, but I'm going to use the phrase "its your birthday" to sound cool, and hip, because I saw it on MTV!!!!"
Yeah.
White Guy 1: Oh my golly, I do believe its your birthday, gee, go you!
White Guy 2: Aw, shucks thanks, teehee.
On your birthday you put numbered candles in your dad’s asshole and light them. As your dad’s moaning from the hot wax dripping into his asshole you fuck your mom. When your about to cum you ejaculate all over the candles in your dads ass giving him instant relief and a great orgasm.
Hey dad can we do a lonely birthday tonight I’m feeling down.
The unfinished black and white first film of Quentin Tarantino. Half destroyed in a fire, it never got a general release, however you can get bootlegged copies of the remaining 34 minutes from places like eBay.
"I well wanna see My Best Friend's Birthday!"
"Oh, I've seen that!"
"You sure?"
"Yeah!"
"Really?"
"Yeah, with Julia Roberts right?"
"No, that's My Best Friend's Wedding."
"Oh."