
...probably playing "Donkey Kong"
on my classic Nintendo.
The Big Bang Theory Season 3, Episode 13

I mean, even Donkey Kong
had Donkey Kong Jr.
The Big Bang Theory Season 5, Episode 12

Or Don Quixote is a book
about a DONKEY named Hotay.
The Big Bang Theory Season 5, Episode 21

I'm just contemplating
Buridan's DONKEY.
The Big Bang Theory Season 10, Episode 7

that a hungry DONKEY placed between
two equidistant bales of hay
The Big Bang Theory Season 10, Episode 7