It's time for a very special guest CALLER.
The Big Bang Theory Season 8, Episode 20
Need the location of an incoming CALLER.
Breaking Bad Season 5, Episode 14
Unknown CALLER.
It's got to be them.
The Big Bang Theory Season 12, Episode 23
You know what?
That's not a flag question, next CALLER.
The Big Bang Theory Season 9, Episode 15
...there is a gentleman CALLER
bringing flowers to your fiancée as we speak.
The Big Bang Theory Season 8, Episode 7