first birthday cake
This cake is the dried and combined juices of both parents when a successful conception has occurred. It can be found anywhere and is not recommended for eating.
Two hours after confirmation that she was pregnant, Ashley finally washed her sheets and got rid of the first birthday cake.
First birthday
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.