Empty room.
The Big Bang Theory Season 7, Episode 20
EMPTY box, EMPTY cylinder,
The Big Bang Theory Season 5, Episode 12
Hey, look, there's Rothman's
EMPTY office.
The Big Bang Theory Season 5, Episode 17
I found it, but it's EMPTY.
The Big Bang Theory Season 10, Episode 11
to replace the toilet paper
when it's EMPTY?!
The Big Bang Theory Season 7, Episode 12