Top definition
Wearing casual clothes at an event where you expected to dress up, ie at christmas or new years eve.
Girl 1 : Did you buy a new outfit to wear on new years eve?

Girl 2 : No, I'm having a sporty christmas.
by mikalover January 12, 2010
Mug icon

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