If I'm going to jail, I'm killing him,
not breaking his THUMB.
The Big Bang Theory Season 9, Episode 14
General rule of THUMB,
Game of Thrones Season 7, Episode 3
that's the Pasadena City Police, but if
you broke my left THUMB, that's the FBI.
The Big Bang Theory Season 9, Episode 14
No. But your THUMB does.
The Big Bang Theory Season 5, Episode 16
...and then cuts off my THUMB?
The Big Bang Theory Season 3, Episode 13