Best definition
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.Singular; Wanko.

“Yes I’d love to go to the Ivy, but lately it’s been full of Wankos”

“Check out that Wanko haircut”

Wankos: define #2
like a smoko where a short break was given for a smoke, but instead of smoking one masturbates
Yes! that was the bell for break, time for my wanko.
Wankos: define #3
a nickname for a quick wank
leave me in my room im going for a wanko