Someone who only chases products that are hype at the moment. They only care about what others think of them not about the actual quality or enjoyment of the product itself. Typically low esteem cloud chasers who can't pull hoes.
Man that hype boi doesn't know s*** about sneakers, he is only rocking those because people are currently dick riding them.
A night where a group of high schoolers get excited for the event coming up next week.
Garrett: Hey Austin, You going to Hype Night tonight?
Austin: Only if it is the hypest.