Talk:Sheldon Cooper/@comment-77.102.31.161-20120709013519

Ok i have not read all the comments on here so i don't know if this has been asked before. In the Characterization bit above it states that Sheldon has to knock (on her door) and say Penny's name three times but in the same paragraph it talks about the episode where he finds Penny's apartment messy and goes to clean while she sleeps, well in that very same episode when he goes to apologise Sheldon only knocks once and doesn't say Penny. So my question is when and why did Sheldon start doing this (although i do find it funny when he does)