Like a turnicate to
block blood from an area the turdicate is when you tighten your
belt as far as you can to stop a
turd coming out. It is usually used when you need to take a dump but something of importance is happening. It can also be used mid-dump so you get up and do it so it doesn't bother you. It can be risky though, sometimes it squeezes the crap out.
Guy 1: 'Dude where were you, you were nearly
late'
Guy 2: 'I
know i was taking a shit when i realised what time it was. I
hat to turdicate it off'