The numbing of one's legs after a lengthy session on the toilet (the toilet seat rim is typical applying pressure to a certain area of the upper leg that can decrease the flow of blood to the legs, causing numbness). The person will typically lose their balance when standing up to either wipe themselves or pull their pants up.
Dude, I took such a long shit this morning that I got shit legs and fell against the wall.
Anyone who is lazy as shit and can't move one leg in front of the other for fear of over exertion. Kodak and Heidelberg workers suffer from this the most. If you have checked how lousy they are doing, you can see why.
There goes that Pawlo Bezduch grabbing the newspaper to go take a shit and hide in the john for an hour, while I load four trailers- that fucking SHIT-LEG!!