
What happened
to your THUMB?
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

You know,
Italian housewives have a rule of THUMB:
The Big Bang Theory Season 2, Episode 9

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