Because I can put two and two together like nobody's business

But only if the two and the two aren't actual numbers.

I was wondering today why I couldn't find "Jolly Old St. Nicholas" by Marcel Marceau and I was very frustrated and I started humming "Thank Heaven for Little Girls" and all of a sudden, the wheels started turning inside my snot-soaked brain and I was all like, "In your face, Nancy Drew, because I figured out this mystery all by myself and needed no help from Bess, George and Ned Nickerson."

That's how I talk to myself when I'm running a fever.

So! Sometimes, in searching around on the internet, if you can't find a song sung by Marcel Marceau, that's because the song in question would actually have been sung by Maurice Chevalier.