To spank someone with your schlong.

To slap someone, typically in punishment and preferably across the face, with one’s penis.

To have someone turn something you say into a story about how great they are.

To Schlank means to lick with aggression

This word was pioneered by the infamous Brisbane suburban renegade "Hippy". This wretched vagrant and his frankly criminal exploits all over the suburbs these past few years has seen the slow spread of the term in the nomenclature of Brisbane's youth.

What exactly the term means remains unclear, and in fact, its very likely it means absolutely nothing at all.

The conclusion here is that the word was most likely coined by Hippy while he was Chewbaccin' (completely fucked, only able to mutter and grunt incoherent and vaguely Wookie-ish sounds). It seems he fluked the word 'schlank', and upon someone else having to recount the previous night's events, he decided he enjoyed the word and began using it to randomly replace other words in sentences.

Its most recognized form is an adverb in sentences organizing or describing being fucked up.