Definitions by Blackrazor

Thumbing My Sack 

The act of waiting for an indeterminate period of time in idle uselessness without any measure of solace, diversion, or escape.

Origin: Military, Oilfield, et al.

What do you think I've been doing all day? "Thumbing My Sack"?

I've been waiting on you for 5 days, I guess I can "Thumb My Sack" a few hours more.

Thumbing My Sack by Blackrazor July 7, 2011