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.

Wet Third Base

This is third base, but specifically, oral sex. Such as wet second base, instead of fondling, would be using hte mouth on breasts.

So how far have you got with her?
Third base..
Wet?
Nah, she was gonna go down on me, but my dad came home.

french third base

A term used for doing anal sex with your partner

"Did you shag her last night"
"Yeah, we went to French third base"

twenty-third base

when your music teacher makes the class play with boom-whackers and the moment she leaves it turns into a musical lightsaber orgy

Guy 1: dude me and my friends got to twenty-third base today
Guy 2: yeah I saw james walk out with c minor in his ass

cover third base

the act of occupying ugly friend of guy your friend is trying to get on

Hey, Cat, ya wanna cover third base for me while I hook this dude?

Redneck Third Base

Alternate term for anal. Texas birth control .

Ol' girl ain't down for no more babies , so every night im sliding into Redneck Third base....

Standing on third base

When a person inherits a great situation or place but did not lay down the groundwork themselves.

Standing on third base thinking they hit a triple.