
it's impossible to determine
WHEN you'll arrive at zero.
The Big Bang Theory Season 12, Episode 23

Perhaps you mean a different thing
than I do WHEN you say "science."
The Big Bang Theory Season 2, Episode 23

When she called me an insensitive jerk,
I'd like to think she meant it.
The Big Bang Theory Season 10, Episode 17

Won't Bernadette be mad
WHEN she finds out?
The Big Bang Theory Season 12, Episode 19

No, we wouldn't!
I told you WHEN I was
The Big Bang Theory Season 12, Episode 16