
If I wanted to, I could wipe it out
with my THUMB like a god.
The Big Bang Theory Season 6, Episode 21

...she licked her THUMB
to remove raspberry jelly...
The Big Bang Theory Season 4, Episode 3

so if you broke my right 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