Hey, you! Yes, you over the other side of the bank! Why are you feeding the gulls but chasing us away? What's wrong with us, eh? NOTHING, that's what. When we rip open your rubbish bags we're HELPING. We're getting rid of the rubbish you don't want! What do you mean, we spread it all over the road and make a mess? You put it on the road to start with, didn't you? What's the problem then, eh? How come you won't give us any food now? If you feed us now, maybe we'll leave your rubbish bags alone!
(Yes I KNOW, but it's worth a try.)
HEY! YOU OVER THERE! ARE YOU LISTENING? WE WON'T WAIT MUCH LONGER!
(I don't think it's working. Can we go crap on their washing now?)