The term take the banana is equivalent to just take it and shut up, just do it, don’t even ask. You know if you are handed a banana, you know what to do with it without question. That is it... take the banana.
But dad, why do I have to do it, son, just take the banana shut up and do as I say do.
mom: why wont you finish your banana?
me: thats the black part of a banana no way im eating that.
mom: so?
me: its weird and gross dad: so is your moms pussy but i still ate it