It's called "PARALLEL play."
The Big Bang Theory Season 8, Episode 3
lt's pretty much gonna
run PARALLEL to the truth,
which makes it easier.
Breaking Bad Season 4, Episode 4
That's an inexact PARALLEL.
The Big Bang Theory Season 3, Episode 2
...who doesn't believe
PARALLEL universes exist.
The Big Bang Theory Season 4, Episode 5
...that could serve as a portal
to a PARALLEL universe.
The Big Bang Theory Season 6, Episode 8