1 definition by vonchillyfries

Top Definition
Posting "Happy Birthday" messages, pictures, and videos on a friend's social networking site when it is not his or her birthday. The joke annoys the person who receives the messages and confuses his or her friends. Also, this is an excellent way to separate one's friends from mere acquaintences since true friends will know one's actual birthday.

If the birthday bomb generates mass confusion or is especially entertaining, it becomes an Epic Birthday Bomb.
Wait. Is it really your birthday? Or, is this a birthday bomb? I thought we just had a party for you like two months ago.

Josh totally birthday bombed me. It was so annoying! My phone kept ringing all day with notifications.

Let's birthday bomb Christine! We still need to get her back for making us watch American Idol with her.
by vonchillyfries June 29, 2010

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt