Comes from an uneducated tourists feeble, but well intentioned attempt, at raising a glass and toasting a drink with the Irish Gaelic term, ‘slàinte mhath’, meaning ‘Good health’.
First used in the Westenra Hotel in Monaghan , Monaghan Country, Ireland in 2017 by the Burnett Family, ‘Schlangnah’ has now become a socially accepted term when raising a glass with Irish mates in both Australia and New Zealand.
It is the filthy area never whiped between a man's balls and his anus. Legend has it that shit nuggets dwell in this region. (Watch your tongues ladies.)