A goatee is
just hair on the CHIN.
The Big Bang Theory Season 7, Episode 16
...with half his CHIN scraped off?
The Big Bang Theory Season 3, Episode 10
and a perfunctory
CHIN jut of recognition
The Big Bang Theory Season 5, Episode 15
Benjen always lifts his CHIN
when he's about to charge.
Game of Thrones Season 6, Episode 2
I expect you to wipe the pudding
off your CHIN. Gentlemen.
The Big Bang Theory Season 6, Episode 8