Quotes / Another Dimension

Listen: there's a hell of a good universe next door; let's go.
E. E. Cummings

"Maybe it got sucked into a parallel dimension."
ALF trying to explain the disappearance of the family cat.

Grim: Yeah, that's the entrance to wing thirteen: the supernatural wing! It exists in Another Dimension.
Billy: Another Dimension? No one mentioned Another Dimension.
Grim: Yeah, we step through there and ascend to the Home of the Ancients!
Billy: I hate to throw a monkey wrench into this ascension to Another Dimension that wasn't ever mentioned BUT-
Grim: What's with the sudden dissension?
Billy: I'm pulling an abstention to the ascension to Another Dimension; my mommy said I'm not allowed to.
Grim: Well, I don't want to cause tension with this ascension to...
Mandy: Stop it! Both of you just stop it!
The Grim Adventures of Billy & Mandy

Your world is but one of many realms. One of them is a forsaken land called Outworld, ruled by an immortal who has crowned himself emperor. Now he seeks a new world to conquer and enslave.
Raiden, Mortal Kombat

Whoever set up this intercom system clearly wanted to fight me. I keep hearing "dimensional power", "dimensional contamination". What the fuck are they talking about? I'm pretty sure these aliens are three-dimensional. Probably from somewhere deep in space, but space isn't another dimension.
Gordon Freeman expressing his annoyance at this trope.