1 definition by ilikegrapes

Top Definition
abbreviation of the phrase "come on son"
Your friend texts you some ignorance and you reply " #cos"

Your friend drops food on you pants and you shout "C.O.S.!"
by ilikegrapes May 28, 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