cutting trenches
When you have to poop and you keep farting, your farts are in fact cutting trenches through your poop to get out.
I was cutting trenches in blockbuster yesterday, i had to race home to poop in privacy.
trench cut
The trench cut is a standard military haircut from WW I to the present. It featured shaved sides and back of the troop's head and left a little on top. This was a fast cut to give and prevented vermin nests in most of the head in trenches
The troops received a Trench cut prior to deployment.