
Um, I play a CUSTOMER
in a diner
The Big Bang Theory Season 7, Episode 12

Yes, but at this point,
pretty much any CUSTOMER does.
The Big Bang Theory Season 7, Episode 13

He could be the first CUSTOMER.
Breaking Bad Season 4, Episode 5

Yeah, you're my first CUSTOMER today.
The Big Bang Theory Season 6, Episode 1

Or as you may know him,
Dave from AT&T Customer Service.
The Big Bang Theory Season 3, Episode 4