I am the master of my own bladder - The Big Bang Theory

I am the master of my own bladder - The Big Bang Theory
Sheldon is updating his daily log when he hears something bump. Instead of going out his door to investigate, he chooses to crawl around the ledge outside of his window to Leonard's room, where he and Penny are starting to have sex.
S03E13 The Bozeman Reaction episode.
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