Ssiscool

Upvote valid corrections to help move entries into the corrections section.

Suggested correction: He's awoken by a door closing, not necessarily the front door. He could have heard Sheldon closing his door.

Bishop73

While that is possible, it is unlikely as it's clear Sheldon has already made a dent in the cleaning of Penny's apartment. Plus Sheldon would have simply replied to Leonard when he called out.

Ssiscool