A "Hood" (or "Bonnet" as they call it in the land of bad teeth) is something entirely unnecessary to cover your engine.
Often considered useful for aerodynamics, it actually just causes a lot of lift under the front of a car, and if you're not a pussy you make enough power to overcome the drag anyway.
Dude 1: Dude your hood flew off like 2 hours ago!
Dude 2: So? I'm still Gapping fools.
Officer: I'm going to have to give you a ticket for that.
Dude: Yeah because if I don't have a hood someone is TOTALLY gonna die.