
and last week, I slammed my
THUMB in the kitchen drawer.
The Big Bang Theory Season 5, Episode 14

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

I had lost a lot of THUMB blood.
The Big Bang Theory Season 5, Episode 16

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

General rule of THUMB,
Game of Thrones Season 7, Episode 3