The day after someone's birthday. Most commonly used when someone forgets someone's birthday and wants to wish that person a happy birthday anyways.
Sorry I forgot your birthday yesterday, but happy birthterday!
by datoneperson December 05, 2010
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