1 definition by katie and bridget

Top Definition
Causal Sex Buddy ! Means like to think a certain person that may be a geek n not good enough to date but he is still alright to have casual sex with so this makes him your CSB
"No way he is a freak he is not my boyfriend he is just like me CSB"
by katie and bridget March 29, 2007

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