Around 1977, I played a little trick on one of my regular practice partners, who was the house man at Star Billiards in Santa Rosa. He was also, so far as I know, the person who coined the term "squirt" (AKA cue ball deflection). I had recently discovered the joys of waxing and I slipped a prepared cue ball onto the table.
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With the cue ball behind the line I asked him to shoot a stop shot on a ball near the far corner pocket. The cue ball drew straight back two diamonds. I said, "No, just stop the ball." Again, he drew the cue ball back two diamonds. He knew exactly how he had to hit the ball for a stop shot on that broken in but clean cloth and a normal cue ball. I then explained to him what was going on.