Top definition
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"
by Sowjoji July 27, 2014
Get the mug
Get a cake smashing mug for your daughter-in-law Yasemin.