Definitions by thirdrock

third base coach 

1. {Wingman} i.e. the friend who helps you meet and hook up with the pretty girl while distracting her from any and all forces of cockblockery

You should dance with that girl.

Can't. I promised my buddy I'd be his third base coach tonight. I have to get that kid laid.

third base coach by thirdrock February 15, 2005