As Jeff waited, Diana made her decision. "I know! Teehee, I'll put you somewhere that you'll always be near me! That way, even if I'm naked, I can always check in on you!"
Jeff was confused. "And... where would that be?" He knew of a few locations, but didn't want to try and guess.
"Hehe, Why don't you see?" She lifted her skirt up, opening her diaper's waistband again. Jeff didn't want to know where it would be; With her wording, there were only a few spots.
As she reaches down, Jeff closes his eyes. As he feels her skin against him, she stops for a moment. "This'll be a tight fit!"
Then she turns him around, before shoving him butt-first into her urethra. His positioning trapped his arms against the walls due to how small it was.
As his head was pushed back, barely sticking out, she pulled her hand away. "There you are! Nice and snug!"
He had to admit, Snug was the right wording, even if she meant the wrong meaning. She closed up the diaper, locking Jeff back in the darkness.
In this spot, he could barely move, and he could feel that the walls were stretched to contain him. Diana, meanwhile, prepared for bed.