1) When
one becomes drowsy from hitting the weed too
hard. It is a combination of the words, "high" and, "tired".
2) When one must put his/her
boss under the influence of narcotics, usually in an interview, in order to acquire the job they're applying for.
1) I shouldn't have
smoked that purple
stuff, man. I'm really highered now.
2) You know that job interview I had last week? Yeah, it took a lot of
work, but he finally highered me.