A C, an E-flat, and a G go into a bar. The bartender says: "Sorry, but we don't serve minors." So, the E-flat leaves, and the C and the G have an open fifth between them.
After a few drinks, the fifth is diminished and the G is out flat. An F comes in and tries to augment the situation, but is not sharp enough.
A D comes into the bar and heads straight for the bathroom saying, "Excuse me. I'll just be a second." An A comes into the bar, but the bartender is not convinced that this relative of C is not a minor. Then the bartender notices a B-flat hiding at the end of the bar and exclaims: "Get out now! You're the seventh minor I've found in this bar tonight."
Eventually, the C sobers up, and realizes in horror that he's under a rest. The C is brought to trial, is found guilty of contributing to the diminution of a minor, and is sentenced to 10 years of DS without Coda at an upscale correctional facility.