Usually referring to the word lurp
A tall lanky person, who can't quite handle him/herself during physical activities, basketball, running etc. White or pale looking and fat. Despite his/her height their gut sticks out to quite an extent and when they show you this gut you will shudder in disgust.
Adam: Omg! look at Brent he's taller than the locker and yet he looks fat. Brent your such a plurp!
Brent: I am not a plurp!