If you treat the beach as your personal ash tray and leave cigarette butts buried all over in the sand, you are an asshole and ought to have each and every one of those butts jammed into your orifices and re-lit.
If you walk your dog on the beach and do not bag up and remove that which your dog puts out, I will bag it for you. Then I will take your picture the next time I see you standing there, ignoring your dog crapping on the beach where my kids play, and take another picture of you walking away from the steaming pile.
A quick visit to the one-hour photo place, and I will be happy to present you with a gift-wrapped box of your own dog's shit, complete with a personalized picture card of the offense.
Ah, vacation always offers the most cathartic events...