geek

ot noun

1. A carnival performer specializing in bizarre and unappetizing behavior. I once saw a geek bite the head off a live chicken.
2. A person who is intensely interested in a particular field or hobby and often having limited or nonstandard social skills. Often used with an attributive noun. I was a complete computer geek in high school, but I get out a lot more now.
3. (by extension) An expert in a technical field, particularly one having to do with computers. Do you need a hardware geek or a software geek?
4. An unfashionable or socially undesirable person. Why do you hang around with them? They’re just geeks.

fe’l verb

1. To behave geekishly or in a socially awkward manner, especially when under the influence of drugs or other psycho-active substances, and exhibiting such marked characteristics as hyperactivity, repetitiveness, talkativeness, nervousness, irritability, or paranoia. Hey, check out that guy...he's really geeking out pretty bad.
2. To look; to peep; to stare about intently.