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
I had lost a lot of THUMB blood.
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
You know,
Italian housewives have a rule of THUMB:
The Big Bang Theory Season 2, Episode 9