Birthday punch 

Punching or kicking someone to the amount fo years they have been alive

I punched/kicked George 18 times for his birthday punches

Birthday punch by Qbone October 28, 2020

birthday surprise 

a black wax candle is used in anal intercourse. Traditionally, Happy Birthday is sung as this is done.

omg. for my 19th birthday jack gave me a birthday surprise!

birthday surprise by hellogoodbye123456 February 20, 2009

Birthday Bailout 

When kids go to so many birthday parties that their parents are going bankrupt paying for gifts. People wish that they could get bailouts like all of the big automotive companies.

Four birthday parties and two bar mitzvahs in one week! I need a birthday bailout.

Birthday Bailout by the cupcake flies at midnight July 12, 2010

birthday behavior 

Living your life like it's a party and takin' party to the Limit
Celebrate all day (and night) in your Birthday suit and expose your partying attitude!

Wow did you see that fine girl walking around like shes got some birthday behavior going on!

birthday behavior by The1unoDC26 October 13, 2019

birthday gift 

To give someone something they want for their birthday

I gave Tim the toy he wanted as a birthday gift for his 13th birthday

birthday gift by Gxyxxgdy July 1, 2017

Birthday Bash 

The day directly in between two birthdays

"Whose birthday is it? Oh neither of theirs, this is their birthday bash, the day directly in between Austin and Paul's birthdays"

Birthday Bash by Fletcher420 March 28, 2020

Birthday Cake Double Fuck 

You know how you can now put any of your favorite photos on the frosting of birthday cakes... well the BCDF (or Birthday Cake Double Fuck) is when you have a local bakery put your favorite photo of your woman on a birthday cake. You then cut that picture out of the cake and place at the entrance of her pink hole and fuck the hell out it.

All my girlfriend wanted for her Birthday was a cake, so I got her a custom cake and later gave her the Birthday Cake Double Fuck....call me old fashion, but that's romance!

Birthday Cake Double Fuck by B-Youth Turbo October 14, 2007