I'm just contemplating
Buridan's DONKEY.
The Big Bang Theory Season 10, Episode 7
Or Don Quixote is a book
about a DONKEY named Hotay.
The Big Bang Theory Season 5, Episode 21
I mean, even Donkey Kong
had Donkey Kong Jr.
The Big Bang Theory Season 5, Episode 12
Wow, "Donkey Kong"!
The Big Bang Theory Season 8, Episode 7
...and spun toward
a grotesque tailless DONKEY...
The Big Bang Theory Season 1, Episode 16