Well I man derives from the Geordie term wey aye man generally referring to a shocking subject which causes an individual to questions ones validity of a claim as geordies have evolved the term has changed slightly using well instead of wey
For instance: I went shopping today and some girl offered me a blow job; general Geordie response "well aye man"
(origin un-known) a word or sound, usu. used in northern parts of england, usu to mean yes. Or, is often used to show indignance, usu. wil an 'aw' sound before it.