whiz kid
a young person who is exceptionally talented or proficient at a given subject.
Yo whiz kid, come over and help me with my chemistry.
whiz kid
A asshole who thinks he’s smart
He’s a whiz kid.
whiz kid
A smart-alecky youngster who is always needing to "drain his radiator".
Whiz kids are supposed to be brilliant and talented; makes me wonder, therefore, if they are actually able to attain such exceptional bladder-control dat they can feel da need to pee whenever they choose, rather than merely letting Mother Nature decide when it's "time to go"?