I could be a zookeeper, but I'm not... - You say this when someone’s idea is so bad it makes you want

You say this when someone’s idea is so bad it makes you want to throw a banana at them.

'I could be a zookeeper, but I'm not.' after my friend said he wants to be a flamingo DJ.

'I could be a zookeeper, but I'm not.' when my brother told me he wants to be a squirrel rapper.

'I could be a zookeeper, but I'm not.' after my dad said he wants to be a koala taxidermist.