Some way of saying 'happenings', 'events' or 'buisness'
"Hey Patty Sue! What's goin' down the hishas?"
"I'm excited cause there's a load of fun hishas coming up in this month"
"Ugh Wonton is such a gossip, she's always got to stick her nose in everyone's hishas"
"Mind your own hishas, skank"