
Yeah, but they don't have to GLUE
the books together.
The Big Bang Theory Season 2, Episode 18

- What are you using as a bonding agent?
- Hot GLUE.
The Big Bang Theory Season 2, Episode 18

I'm the social GLUE
that holds this little group together.
The Big Bang Theory Season 4, Episode 3

Maybe you should
master GLUE
The Big Bang Theory Season 7, Episode 7

This might be the GLUE talking,
The Big Bang Theory Season 12, Episode 23