one who knows everything about a particular subject.

a person who has in-depth knowledge of something.

"Out of order", unfair and not acceptable.

the best person you will ever meet. they got that amazing personality and loves undertale and ships nagito komaeda x sans. if you meet an outer, consider yourself lucky. he will help u with depression and everything and even have the good sex

Being out of one's mind, usually associated with taking drugs (particularly Cannabis).

The best game that nobody ever heard of.

a place located far from a metropolitan area, in the middle of nowhere. Always written to a resemble a real name of a village.