covering your back. six comes from being behind a person (six o' clock position). so "watch my six" is "cover me from behind"
SWAT Team Leader: Watch my six boys, this is goina get ugly

SWAT Team Members: Roger that sir.
by Wite Kastle October 6, 2006
Get the watch my six mug.
Military slang for "watch my back".
"Six" comes from six o' clock position.
Operator 1: "Dude, watch my six in there."
Operator 2: "Of course, man!"
by XxVinrAlfakynxX July 2, 2017
Get the Watch my six mug.
A sentence that, when you add the word "favorite" in between "my" and "bag," you have a sentence with every single letter in the alphabet in it.
An idiot attempted to sound smart. I fixed his attempt.
by Vince April 7, 2005
Get the Pack my bag with six dozen liquor jugs mug.
Means one putts it on his gang on what he stands for .(only people whos gang is under the six point star will refer to this)
6oi you ain't finna shake shit this way that's on my six..
by Road runna (850) June 8, 2022
Get the On my six mug.