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'.
gamer 1: hey guys ready up

gamer 2: but i'm not ready
by TH3 R1G July 9, 2011
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A cool slang way of sayin your ready. Popularly used in North West LondonNorth Weezy
"Safe bruv u ready up?"
"Yea yea im ready straight, lets roll"
by Al Pacino NW October 11, 2006
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The phrase “ready up boys” was a phrase used partucally fron 2017-2019 when the game called fortnite was growing in popularity.

Fortnite slowly died and all the 12 year olds converted to playing with their willies or playing nba2k.

Both gaming communities get absolutely no pussy and play all day until they are as wet as their mom on a Tuesday ashen their stepdad who beats them comes around.

Amen
Wow “ready up boys” before my step dad comes
by Bigoldad November 27, 2021
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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 ".
I hope your round up ready, because I just crop dusted you!
by Mookie B. July 22, 2017
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