Being a lowly GA pilot, I generally flick between a local ATIS and 121.5 on box 2. I've reported 2 (CAT) aircraft this year for frankly outrageous abuse of the D&D frequency. Casual, unneccessary, sarcastic transmissions on an emergency frequency are not big, nor are they clever. I have no idea whether any action was taken as a result of my reports. I would like to hope so, yet I cynically suspect not.
Flying in command of a large jet does not immunise you from being a complete d1ckhead with your head up your arse when you press the transmit button and revert to schoolboy mode.