[Radix]

The expression is, I believe, ‘Your ass is sucking canal water.’

I never quite got it, the meaning, but it was said often by Vietnam Veterans of my familiarity.

[OldWarBaby]

I remember that “canal water” reference from the veetnam days. Our Brown Water Navy operated in those muddy coastal rivers and irrigation canals. There was lots of weird stuff living/floating in those waters-—