![Is it working?
Is it working?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Is it WORKING?
The Big Bang Theory Season 12, Episode 13
![I have a working knowledge of the entire
universe and everything it contains.
I have a working knowledge of the entire
universe and everything it contains.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
I have a WORKING knowledge of the entire
universe and everything it contains.
The Big Bang Theory Season 2, Episode 18
![Hey, if you'd like, I could show you
the lab we're working in.
Hey, if you'd like, I could show you
the lab we're working in.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Hey, if you'd like, I could show you
the lab we're WORKING in.
The Big Bang Theory Season 2, Episode 11
![Nice working with you.
Nice working with you.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Nice WORKING with you.
The Big Bang Theory Season 3, Episode 4
![You know the new Discovery class missions
NASA's been working on?
You know the new Discovery class missions
NASA's been working on?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
You know the new Discovery class missions
NASA's been WORKING on?
The Big Bang Theory Season 8, Episode 21