The most literal sense of the expression "hog heaven" is a filthy pig sty with plenty of fresh slop on which to feed. Thus the pigs would be just about as happy as they could be.

People extend this idea to other, perhaps less filthy, situations. I've often heard people say someone was in hog heaven for just about any serendipitous occurrence.

A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.

Hog Heaven- When a person is in a situation or created circumstances which is beneficial to themselves, they are living in hog heaven!

Hog Heaven- When a person obtained what they wanted base from pure selfish motives!!!

On a guys night out, you go to a bar with the fattest women available. The goal is to submerge what little dignity you have left in their fat rolls, in hopes to take one home to fuck.

For gay men, an phrase to describe extreme enjoyment of dirty or kinky sex. There is a Dick Wadd video by that name.