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 December 12, 2007
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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 May 28, 2018
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