1 definition by Sowjoji
When a male ejaculates on the female's face while screaming "Happy Birthday" as loud as he can. This must be done on the female's birthday to qualify as Cake Smashing
"Hey Jim what are you gonna get Anna for her Birthday coming up?"
"Meh I'll give her a good cake smashing"
"Meh I'll give her a good cake smashing"
by Sowjoji July 28, 2014