https://www.yahoo.com/style/m/191493e4-f379-3add-ad84-31237d36d565/ss_%26%2339%3Bthe-big-bang-theory%26%2339%3B.html

Spoilers ahead! The Big Bang Theory (https://www.yahoo.com/movies/m/d64a1849-4c9c-3e5b-86cc-1c860e8069f8/the-big-bang-theory-season-10.html) finally revealed Bernadette's baby bump (https://www.yahoo.com/style/m/b3dea6f7-3d71-318f-9c42-6a8bd2ee95b6/here's-an-exclusive-first.html) tonight (https://www.yahoo.com/style/m/b3dea6f7-3d71-318f-9c42-6a8bd2ee95b6/here's-an-exclusive-first.html) and that Raj is actually single, but none of us could have seen the big reveal coming about Sheldon Cooper. And I mean none of us. The writers and producers of The Big Bang Theory have told us in numerous interviews over the years that there are certain secrets they're superstitious about revealing. For one, there's the mystery surrounding Penny's maiden name. Another is why the elevator has never gotten fixed. "It just became superstition," executive producer Bill Prady told us. "I don't know [if it will ever be revealed]." So, finding out that the reason Sheldon knocks and says someone's name three times before