what to draw? is this a good drawing idea?

[bow chicka wow wow!]

i like drawing pictures with surrealism but i cant think original things..i was thinking drawing a person showering but instead of water coming out of the shower head thing draw eyes legs and body parts n the person showering to be made out of water? also like a zoo but people in the cages and animals watching...do you have any ideas?!
thanks!!!!!!!!!!!!