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
Not the brush part.
Just the little RUBBER thing...
The Big Bang Theory Season 4, Episode 6
If you really want to help,
put on a RUBBER glove,
The Big Bang Theory Season 11, Episode 16