wasd

W is North, A is West, S is South and D is East.

We use wasd in FPS games.

Ho

A prosecute. Some of the time in a game chat, someone will say ho as a misspelling of hi.

Player 1: Hi!
Player 2: Ho!
Player 1: I'm gonna report you!
*Player 1 reported Player 2*
Player 2: Why? It's just a misspelling!
*Player 2 got banned for 1 day*
Player 1: Haha!

ing

"ing" is a suffix used for doing something. The word bing has a ing but it does not do something.

The man is jumping on the pool

AC

Stands for All Clear and it's used on calculators!
All Clear, Calculator!
©™✓=π are all gone!
Even itself is gone!

AC is on calculators.