You know,
Italian housewives have a rule of THUMB:
The Big Bang Theory Season 2, Episode 9
...and then cuts off my THUMB?
The Big Bang Theory Season 3, Episode 13
I had lost a lot of THUMB blood.
The Big Bang Theory Season 5, Episode 16
No. But your THUMB does.
The Big Bang Theory Season 5, Episode 16
If I'm going to jail, I'm killing him,
not breaking his THUMB.
The Big Bang Theory Season 9, Episode 14