Paradox; a statement or proposition that, despite sound reasoning from acceptable premises, leads to a conclusion that seems senseless, logically unacceptable, or self-contradictory.
Oxymoron; a figure of speech in which contradictory terms appear in conjunction.
I'm not sure if you meant baking or biking but if you meant biking then it basically means it's unsafe and one you get in an accident your brain would uh fall out so yea.