General rule of THUMB,
Game of Thrones Season 7, Episode 3
If I'm going to jail, I'm killing him,
not breaking his THUMB.
The Big Bang Theory Season 9, Episode 14
What happened
to your THUMB?
The Big Bang Theory Season 5, Episode 16
No. But your THUMB does.
The Big Bang Theory Season 5, Episode 16
If I wanted to, I could wipe it out
with my THUMB like a god.
The Big Bang Theory Season 6, Episode 21