Explentatious is used to describe an event or thing which exceeds already high expectations. If you knowsomething will be good, but turns out to be really great, then it is explentatious.
Larry 1: I just want a cyber truck 😔.
Larry 2:Just get it for yourself, problem solved.
Larry 1: It wasn't really a problem, rather an explerment of want.
Larry 2: Shut up Bitch