We filled up the kitchen sink with 3 inches of warm water, donned our robes, and gave him a scrub-down. He wasn't very excited to be stripped of his pajamas and diaper in the kitchen (it was a little cold), but once he hit the water, he was a happy camper.
After this delightful bath, we took him out and wrapped him in his little hooded towel, which wasn't his favorite since it was a little cold. John toweled him off as much as he could so we could put a diaper on him when we got upstairs.
But then he peed all over John. And I laughed. A lot.