
The brake might be IMAGINARY,
but that stop sign you just ran wasn't.
The Big Bang Theory Season 3, Episode 7

Even as a little boy, he'd send his IMAGINARY
friends home at the end of the day.
The Big Bang Theory Season 1, Episode 15

His IMAGINARY girlfriend
broke up with him.
The Big Bang Theory Season 1, Episode 2

They were not friends.
They were IMAGINARY colleagues.
The Big Bang Theory Season 1, Episode 15

Not to mention IMAGINARY.
The Big Bang Theory Season 1, Episode 1