What about
the ROOMMATE agreement?
The Big Bang Theory Season 7, Episode 16
At the hands of your ROOMMATE?
The Big Bang Theory Season 4, Episode 2
He thought he was right,
but his ROOMMATE knew better."
The Big Bang Theory Season 8, Episode 9
Article One, Section Three
of our ROOMMATE agreement.
The Big Bang Theory Season 2, Episode 10
...and when my ROOMMATE got engaged,
my girlfriend wanted to move in with me.
The Big Bang Theory Season 8, Episode 1