...who's PRONE to canker sores
and pinkeye?
The Big Bang Theory Season 4, Episode 23
Perhaps even taller, smarter
and less PRONE to freckling.
The Big Bang Theory Season 1, Episode 15
She was always PRONE to melancholy.
Game of Thrones Season 4, Episode 8
Humanity is disorganized,
PRONE to destruction.
Westworld Season 3, Episode 8
If I was PRONE to sarcasm...
The Big Bang Theory Season 6, Episode 19