watch my six

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

Watch my six

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