Australian slang used to describe a person of the name dropping or flashy variety. Derived from the term wanker Similar to Eurotrash. Wankos tend to have insatiable egos, can lack social manners and tact (unlike JC); Will often commit social faux pas in the name of vanity.
"Yes I'd love to go to the Ivy, but lately it's been full of Wankos"
"Check out that Wanko haircut"