I didn't know shooters were still dog this, but let me give some background.
Along about 1966 or so, I started my working life as a skeet boy at the old McBride Rod and Gun Club, England Air Force Base, LA. I was twelve years old, and it was a job made in heaven for a young fellow with boundless energy and a love for shooting. I was pad the princely sum of 50 cents per hour, but got to shoot the extra shells at the end of the day. Normally there would be a couple of boxes of what we called "breaks:, and the skeet boys got to shoot those at the end of the day.
One thing the range master hapred on was safety, especially the practice of resting the muzzle of the gun on the top of your foot. It was quite common and it would set him off.
I understand that the gun was supposed to be clear, and after a couple of rounds of skeet, the gun starts to get heavy, but still, it's dangerous.
TTAG has an article about the practice, with some very NSFW photos of the predictable outcome of the practice. They ain't pretty, and you will hobble around for a while. Let's not do this, please.
It's been frowned upon since the mid-60s and you would think we would have learned better by now.
Please fellows, don't rest your muzzle on your foot.