John looked up at Sherlock and blinked. "Human males don't? But it's so common for those under the sea for the males to carry the children." He did have a lot to learn about humans. Odd creatures.

He rubbed his belly in the bath, quiet as he thought for a moment.

"I could wait until our child comes." John suggested when he saw Sherlock's almost nervous expression, "But I do think clothes for when our child comes."