Getting so drunk you can't feel your arms, legs, face, etc. Does not apply to your junk, that is a different kind of drunk. Getting numb usually happens after a long day at work, after learning of something that really pisses you off or saddens you, after succeeding in glorious fashion at a particular task, or when your day is wide open and you have nothing else to do.

When you eat dirt for the first time and leave your family to build a shack in the woods