A person who, whilst playing World of Warcraft, strips their avatar down to it's underwear, goes into a crowded area with a mailbox and starts dancing for no apparent reason or in the hopes of receiving gold.
Look at "Netoxic"! That WoWhore just danced naked on a mailbox! Let's go /spit on him!
regular person: Hey, why weren't you in school yesterday.
wowhead:I was playing wow.
regular person: Ok, are you goin' to that party tonight?
wowhead: No, i gotta go raid a dungeon.
regular person: Fuck, you.
The wowhead ended up going to the party and got wowhead from some drunk chick.