I don't do anything strange, sorry.
But whilst at Crown Casino (land based) a few weeks ago I was playing a slot and this guy & his partner (both around late 40's) sat on the machine next to me.
She inserts her casino card into the loyalty slot and feeds in a $100 note. Next thing I see her carressing the damn slot glass, while after ever 2'nd to 3'rd spin her guy (who looks pretty normal) start softly punching the screen too.
My partner & I could hardly keep straight faces. Each time I got a win they'd up the ante and do it more often. I got a pretty good win finally and I think they got shitty cos they cashed out and walked away in huff