
What's the PROBLEM?
The Big Bang Theory Season 4, Episode 22

No PROBLEM, my treat.
I'll swing by after work.
The Big Bang Theory Season 6, Episode 1

If she has a PROBLEM,
The Big Bang Theory Season 12, Episode 15

Yes, coming in is no PROBLEM, but...
Money Heist Season 1, Episode 11

You figured out
the graphene PROBLEM?
The Big Bang Theory Season 3, Episode 14