A channel used on some IRC networks set up as a "trap" for Spambots. Once a user joins this channel, they will be automatically banned from the network.

Some networks use this channel to send annoying or troublesome users to - as this will also result in them being banned from the network.

The next level above Hell No. This solidifies that you disagree with the question asked you, by adding extra negativity to your answer, before slamming them with the original "hell no" after the answer.

As hell: a phrase used to emphasize the extremeness of an adjective, usually added at the end of the sentence, after said adjective.

Hells no is worse then "Hell no." Hence the "s" after Hell.. which implies that that it is multiple Hells making it worse then only a single Hell.

Where Adolf Hitler currently is

Expressing disbelief; total shock/disgust/incredibility of something to someone

To completely give up or put off