one-eyed trouser snake

A variation on the ever-popular "Trouser Snake", however the prefix added to insure that there is no doubt to what exactly the person is referring to which is coiled in his pants. That is to say, a penis, especially one of considerable length, doubly so if it's snake-like, and almost most certainly if the possesor of said wang must tuck it in his sock or coil it up. See also- Trouser Snake