He figured he'd crawl outside to get some fresh air, since maybe that would sober him up. Once outside, he stood up and fell flat on his face. So he decided to crawl the four blocks to his house.
When he arrived at the door he stood up and again fell flat on his face.
He crawled through the door and into his bedroom. When he reached his bed he tried one more time to stand up.
This time he managed to pull himself upright, but he quickly fell right into bed and was sound asleep the second his head hit the pillow.
He was awakened the next morning by his wife shouting, "So you've been out drinking again, have you?!"
"No! What makes you say that?" he asked, putting on his best innocent expression.
"The beer-parlour (pub) called... you forgot your wheelchair again."