My mother made me wear RUBBER gloves
to kindergarten...
The Big Bang Theory Season 3, Episode 5
The pencil's RUBBER.
The Big Bang Theory Season 4, Episode 18
It can cut through steel
like it was RUBBER.
The Big Bang Theory Season 2, Episode 12
Uh, aprons and RUBBER gloves are here.
Just scrape, wash and stack.
The Big Bang Theory Season 9, Episode 9
And RUBBER gloves, air freshener...
The Big Bang Theory Season 8, Episode 19