Oan is the way own sounds, such is OWNAGE! It can be used for almost any words, and even as a name. It was coined by the Silent Storm Clan and is commonly used as a joke twords people who are newbies.
Oan is a term used to describe a coolhuman with a massive penis. On the occasion of meeting an oan you should capture it before it mates with all the female in the vicinity. Oan is a nice guy that favours his bros over everything. He is one of the lads.