![You went out in the hallway,
stumbled into a portal...
You went out in the hallway,
stumbled into a portal...](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
You went out in the hallway,
stumbled into a PORTAL...
The Big Bang Theory Season 4, Episode 9
![...that could serve as a portal
to a parallel universe.
...that could serve as a portal
to a parallel universe.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...that could serve as a PORTAL
to a parallel universe.
The Big Bang Theory Season 6, Episode 8
![Newspapers? Did you find
a portal back to the 1990s?
Newspapers? Did you find
a portal back to the 1990s?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Newspapers? Did you find
a PORTAL back to the 1990s?
The Big Bang Theory Season 11, Episode 13
![It's just a portal to hell.
It's just a portal to hell.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
It's just a PORTAL to hell.
The Big Bang Theory Season 12, Episode 9