
It can cut through steel
like it was RUBBER.
The Big Bang Theory Season 2, Episode 12

I do. I tested their object
permanence with a RUBBER duck,
The Big Bang Theory Season 12, Episode 17

Uh, aprons and RUBBER gloves are here.
Just scrape, wash and stack.
The Big Bang Theory Season 9, Episode 9

...and glued a big-eyed RUBBER alien mask
to the outside of my window.
The Big Bang Theory Season 6, Episode 2

If you really want to help,
put on a RUBBER glove,
The Big Bang Theory Season 11, Episode 16