In an online gaming lobby, to be told to ready up is when someone is ready to start a game and you must press a corresponding button to be 'ready'.

A cool slang way of sayin your ready. Popularly used in North West LondonNorth Weezy

what you say to somebody who makes fun of your gut, or says you've got quite the beer belly.

Round up in used to kill plants. Plants that are Round up ready won't be killed by the chemical.

Also can be said if you crop dust someone, "fart as you walk past them ".