Yup,
I used to be a Black Jack dealer in College, Lake Tahoe casinos would recruit us for the summer
I went to Chico, but UC Davis got out of school 2 weeks after us, so they didn't start dealing school until then.
I worked as a change guy for those two weeks my 1st year, and when people got change,
I'd just start telling them which machines to play, based on total BS.
'Some old lady was row boating there for hours & didn't hit, its due' (back in the lever pulling days)
It they missed oh well, but if they hit, "where is that change guy!!!",
so the other changers started doing it.
I was getting free drinks all summer from them.