Top definition
The act of sitting your unwiped ass on your partner's face while teabagging them, then ejaculating in and around their mouth. The end result resembles a baby that smeared cake all over itself at its first birthday party.
I got fired because the security cameras caught me giving Carol a first birthday in the supply closet.
by Stephen Jung December 09, 2013
Get the mug
Get a First birthday mug for your Facebook friend Nathalie.