He's just seen a discarded hot dog on the pavement which looks like it hasn't been touched. He gets down on his knees to examine it more closely and it looks like it's been dropped before anyone's had a chance to take a bite out of it. He leans forward and looks as closely as he can. A doubt enters his mind. A terrorist might have poisoned it. Perhaps an animal rights activist has injected the sausage part with battery acid. Plus he can't see a hot dog vendor where it could have been bought from who he can ask: did someone just drop this and walk away? But then again, if he doesn't eat it, he'll be down the £4 he would have been ahead if he had eaten it. He sits and thinks for several minutes. Eventually he eats half of it but he doesn't enjoy it because it might be a terrorist hot dog so he puts it back on the pavement and reasons he's still £2 better off than if he hadn't eaten any of it at all. As he's walking away, he looks back and sees a dog approach and eat the rest. He feels angry and follows the dog hoping it will start.vomiting, but then he realises that if the dog vomits, that probably means he will too. He gives up and goes home, his day having been slightly spoiled