A guy that makes moves on women but has no idea that they are doing everything in their power to avoid him.
A group of ladies are hanging out by the bar, your friend the donkuistador makes his approach and you sit back and watch as the ladies try to wiggle away from this idiot, but he keeps his attack going strong...thinking that they love him.
They would call it the Donkster of the deep, and the old fisherman down at the wharf would reward any fisherman brave enough to fish it out five thousand dollars as a reward.
A condition a person (usually a girl) has when they have an extremely beautifulamazing redonkculous piece of A$$ that no other word can describe other than donkitis.
Breh! Did you see Karley today?! She for sure is suffering from that donkitis! What's that you don't know what donkitis is? Ya know Kim Kardashian and Nicki Minaj... yeah well they both got that donkitis!