Smart Donke - Like a Smart Ass, but more humorous. Instead of belittling others he makes others life better by being a Ride-or-die friend like Donke in Shrek, but way smarter like Einstein.
I'd much rather be a smart donke than a dumb-donke anyday.
Dumb Donke - Like a "dumb ass", but with the redeeming qualities of being likeable and nice. Think Shrek's Donkey mixed with your Best Friend who's an idiot some times.
OK, you Dumb Donke, you know I love you, but it's "there, there" not "They're their".