Biff felt that he needed a wash too so he decided he'd join Jon in the bath. With the water just right he lowered Jon down into the bath. Jon was splashing around a bit but soon stopped to watch Biff pull his nightie up over his head. He stood for a minute in just his panties as he put his nightie into the laundry basket. Jon tried to discuss the strangeness of this situation with Biff but the most he could manage in between gibberish was, "Mommy... Boobies... Big boobies." Biff just smiled at him and proudly thrust his chest forward as he peeled his panties down his legs. Jon was staring now, still finding it amazing that Biff no longer had a penis. He wondered if he might be further changed to closer match the baby he was supposed to be. He hoped he wouldn't lose his penis.
Biff sat on the toilet to pee before he got in the bath. Jon watched him enviously, wishing he could control himself as easily as Biff. After flushing the toilet, Biff slid into the top at the opposite end to Jon. The tub wasn't very big so Biff had to put his legs either side of Jon. Jon was getting comfortable with the intimacy of it all and stopped paying so much attention to Biffs changed anatomy. Biff started to wash himself with a sponge, soaping his shoulder and running the sponge over his breasts. He didn't feel weird doing so in front of Jon. They had both started to slip into their roles of mother and daughter.
When he had finished washing himself, Biff turned his attention to Jon who was splashing and playing as Biff sponged him down. After a while the water started to get cold so they agreed to get out and get dressed. Biff wrapped himself in a towel before picking Jon up and wrapping him in a towel too. He carried Jon like a little bundle back to his room to diaper and dress him