Within hours of reports that Tesco’s all-beef hamburgers contained 30 per cent horse meat, the internet was bombarded with jokes. Here is a selection: I’m so hungry, I could eat a horse... I guess Tesco just listened; Anyone want a burger from Tesco? Yay or neigh?; Tesco are now testing all their vegetarian burgers for traces of unicorn; Tesco now forced to deny presence of zebra in burgers, as shoppers confuse bar codes for serving suggestions; To beef or not to beef. That is equestrian; A cow walks into a bar. Barman says, “Why the long face?” Cow says “Illegal ingredients, coming over here stealing our jobs!”; I hear the smaller version of those Tesco burgers make great horse d’oeuvres.