
No. But your THUMB does.
The Big Bang Theory Season 5, Episode 16

...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

...and then cuts off my THUMB?
The Big Bang Theory Season 3, Episode 13

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