He also invented the Franklin stove,
bifocals and the FLEXIBLE urinary catheter.
The Big Bang Theory Season 3, Episode 6
[Russian accent]:
Flexible men and women.
The Big Bang Theory Season 12, Episode 5
Oh, of course.
I'm nothing if not FLEXIBLE.
The Big Bang Theory Season 12, Episode 20
Can't you be a little bit FLEXIBLE?
The Big Bang Theory Season 2, Episode 16
So, it appears your allegiances
are somewhat FLEXIBLE.
Game of Thrones Season 7, Episode 5