Having sex with a girl from behind, and finishing on her ass. After you've finished you use a rubber spatula to evenly distribute the cum on her butt cheeks, as if it were icing on a cake. When this is complete you may stick a candle in her butt hole and light it. Finish off by putting on a birthday party hat and you have successfully completed The Birthday Cake.
"Dude, I gave Steph the birthday cake last night!"
"Oh that's nice of you dude, was it red velvet or...?"
"No dude, I came on her butt and smeared it with a spatula."
"Oh that's nice of you dude, was it red velvet or...?"
"No dude, I came on her butt and smeared it with a spatula."
by B Hayes April 15, 2013
Get the The Birthday Cake mug.by Jaycu September 20, 2011
Get the Shaking the Birch mug.When two guys are double penetrating a girls vagina the guy who is doing her doggy style slips out and sticks it in her ass. But you have to have a camera to see her face.
by meatnormous August 7, 2006
Get the the birthday surprise mug.A psychotic dool rod with birthday decorations for decoration. She has a musical candle and cannot sing worth a pickle. Her hair is scarily uneven. She will kill you in your sleep.
by BrowskyDoodle June 28, 2022
Get the amanda the birthday stick mug.Guy 1 - Dude, did you see my wall yesterday?
Guy 2 - It was your birthday right?
Guy 1 - Yeah!
Guy 2 - Ahh yes. The birthday surge.
Guy 2 - It was your birthday right?
Guy 1 - Yeah!
Guy 2 - Ahh yes. The birthday surge.
by Spaceman Sobchak December 15, 2011
Get the The Birthday Surge mug.When you make a cake and rub the left over frosting on your girl's tits, then titty fuck her. Then she sucks the frosting off your dick like she is blowing out the candle.
by sockmonkey 379 April 11, 2013
Get the the birthday cake mug.The rule stating that if you are dating someone or "talking" to that person, you cannot make them choose any plans for future engagements within 10 days of their actual birthday. UNLESS that person requests to make the plans. All other plans must be made by the person whose birthday is not within 10 days.
Dylan: Caroline, you have to make the plans for what we do tomorrow.
Caroline: No I don't you ginger, my birthday is in 8 days and its the birthday rule that everyone knows.
Caroline: No I don't you ginger, my birthday is in 8 days and its the birthday rule that everyone knows.
by duhofcourse December 21, 2010
Get the the birthday rule that everyone knows mug.