Bees are not as busy as we think they are. They jest can't buzz any slower.
Notes from Wikiquote
A bee is never as busy as it seems; it's just that it can't buzz any slower. | As quoted in The Modern Handbook of Humor (1967) by Ralph Louis Woods, p. 17 | The bee isn't really that busy — it just can't buzz any slower. | As quoted in Peter's People (1979) by Laurence J. Peter, p. 29.