Front 40

The opposite of the back 40. The front of the building if you will.

Ya'll come up here to the front 40, I need to show you something.

Front Mouth

When, during oral sex, the penis barely enters the mouth and stays in the front of the givers mouth.

"Damn man, that girl must have the strongest gag reflex ever, she only let me get front mouth."

Front-Hander

Word, list of words, phrase, equation, etc. written on the palm of your hand (front of the hand, as opposed to the back of the hand) in order to help "assist" in an upcoming test/exam. Can easily be smeared off when done to avoid accidental teacher confrontation.

Dewey: Hey, how are we supposed to know this for the test?

Rivers Cuomo: We had that written in our notes, you just have to memorize it.

Dewey: Oh, well that's gonna be a front-hander.

front sponge

The sponge the whole family uses in the bathroom for washing their genitals. This sponge should not be used to wash your face. Can also be used as a passive aggressive name for someone you don’t like.

OMG, Brad used the front sponge to wash his face last night. Gross.

Dave, you’re such a front sponge.

Front Dogging

Playing a cricket shot on the front foot, usually seen as disrespectful to the bowler as if the batsman were saying, "this ball is so shit it's no danger to me and I can just smash it down the ground, that's what I think of you fucking scum"

Monbulk CC took turns front dogging a tepid Seville bowling attack

Front up

To act tough, or to pop out against someone.

He tried to front up online but backed down in person

Front stuff

The general term for any sexual acts performed at the front of the body instead of the back.

Basically the opposite to butt stuff.

"So I met this hottie last night at the club"
"Oh yeah, what'd you get up to?"
"Ah just some front stuff"
"Nice."