going out

When used in a highschool setting, it refers to two people going "steady" (old folk term) or being girlfriend and boyfriend (or whatever combination there might be, i.e. bf and bf)

"My boyfriend Chris and I have been going out for almost a year."

Go-getter

Very energetic person.

That guy from Extreme Makeover Home Edition is a go-getter!

going indian

Not wearing underwear.

The jockeys are in the wash. I'm going indian.

going brown

An environmentally friendly resources conservation measure where the toilet is flushed only after the bowl contains the crap of multiple cable laying sessions. A specific sub-type of "going green".

Going brown could potentially save 150 million gallons of water annually.

Go to Bed

The step up from "STFU" because "STFU" just causes you to lose the right to talk where as "Go to Bed" takes away your right of consciousness for that day. Being told this is considered extremely offensive, and it is abbreviated to "GTB" for easier use on forums and other things involving the internet.

Eaxample 1:

Person 1: I could 0wn you with my level 45 paladin n00b!
Person not 1: Go to Bed Neine Fro!

Example 2:

Person A: You are a jerk...
Person B: GTB

go down

oral sex

Can I go down?

going steady

When you've been going out with one person for a considerable length of time.

(Often used on Saved By The Bell.)

Dom and I have been going steady for almost 7 months now.