[jjp]

I had a buddy from college who was notoriously tight. He would get $10 worth of quarters (LOL, back when machines took quarters) and put them in a bucket. When the waitress walked by, he would put one coin in, pull the handle, and order a drink. When she came back with the drink, he would put another quarter in the slot. Tip: $0.50

So his drink cost $1.00 if he didn't get anything back on his two slot pulls. While the rest of us were blowing our bankrolls, he would just hang out waiting for $1 drinks.