Someone eats a fruit and it makes them act differently and starts to make them feel attractive and somehow rizz up girls and more of them. It really just makes them the rizzalante.
Henry: guys I just ate a fruit and now I feel different.
Joe: nahhh that's crazy bro I wish I had that type of stuff
Bob: bro really ate a rizzberry.
a person who shows up for gaming/parties at the worst possible times, is otherwise undependable, can't handle a good joke, and disappears off the face of the map for days at a time.
John is such a razberry because Ellen invited him to her party and he blew her off.