Because while a note makes a sound, the rest is silent.
Allahu ackbar!!
Wooooooden Woooooooden Woooooden!
Lake Eerie. Note: This joke has probably been made before.
No-eye deer! Note: we are from Hicksville, USA. This May not make sense without the Midwestern accent.
Because they don't want to wake up the rest of the bunch.
A finite number! One member to perform the task, and the rest to behave in a manner stereotypical to the ethnicity in question.