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Rick Murchison:I'm sorry, but all y'all (that's the plural of y'all) are wrong!
The real reason for the "mask on the forehead" rule is that students weren't violating enough beer rules to keep up with instructors' thirst, so we made up a new one.
Tank standing up? You owe me a beer.
Blow an 'o' ring? You owe me a beer.
Leave your buddy? You owe me a beer
Come up on the wrong boat? That one's a case!
Mask on your forehead? You owe me a beer.
Rick
P.S. Oh, yeah, you're more likely to donate your mask to Davey Jones from your forehead than most any other way you carry it.