Come on. Technically, a bee shouldn't be able to fly at all. The wings are too small, their bodies are too big.
5 seconds sound clip from the Bee Movie movie soundboard.
You can hear this line at 01:13:20.821 in the Blu-ray version of the movie.
Quote context
[...]
- Just a minute, Mr. Ditchwater. There's a honeybee on that plane.
- Oh, I'm quite familiar with Mr. Benson's work and his no-account compadres.
- Haven't they done enough damage already?
- But isn't he your only hope right now?
- Hey, hold on a second. Haven't we heard this a million times?
- The surface area of the wings and the body mass doesn't make sense.
[...]