The act of going down on a member of the opposite sex who is exceptionally dirty and/or sweaty, typically both. Can refer to cunnilingus, fellatio, or rimjobs.

To start putting on a weight usually a gut.

One might also refer to someone's gut or give said individual the nickname lunch man

Any lunch that is not the main lunch. Basically, what it sounds like. Think of it like a side bet in poker.

Someone who never wakes up until lunchtime.

A noun that means "in trouble"

Most often used as a threat in 2000s sitcoms