The act of sexual conduct in a sled form while going down on an escalator that is moving up.

moving staircase (not to be confused with the moving staircases in Harry Potter) used to make walking up stairs easier. Its like taking the worst part about elevators (makes you fat) and stairs (takes too long) and putting it all in one convenient location.

become greater or more serious

s-ka-lay-tor
verb

1. during a threesome involving one man and two women. the women are stacked stomach too back and the man assumes a kneeling position behind them and proceeds to push his penis from one girl to the next, starting with the bottom girl working his way up. Or reverse the order and direction for variations.

To bring someone to climax

Escalitis is a curable disease. It can be described as a certain diarrhea of the mouth… One in which standard logic is thrown out the window like most normal people have and an extreme, instigating comment is belched out with little thought or regard to offensiveness.

It got worse and worse and worse. Really bad. Shockingly bad. To the point it needs to be announced aloud so people are aware of exactly how bad it's got.