To be shit-faced drunk to the point of faceplanting the floor, and possibly having to use their lips to move across the room since they're too wasted to get up.
"You should've seen David the other night. He had so many drinks, the poor bastard was walking on his lips."
When you take a big shit and you go to wipe but when you look at your toilet paperafter the wipe there is so shit streaks on it. So your butthole is as clean as a white slip.