Cut the brown wire

To excrete wind, or fart.

In extreme cases, to go for a dump / soil one's self.

Taken from Lethal Weapon:

Murtaugh: "Come on, man, come on!"
Riggs: "I dunno, what one should I cut"
Murtaugh: "I don't know! Cut the brown wire!"
Riggs: "OK, here goes......"
Riggs: *parp*

by Cold Boy November 15, 2007

cutting the wire

To finish something close to it's deadline

Bryant was cutting the wire on his final project, he wasn't sure he was going to finish in time.

by aaronstone59847 April 20, 2018