Arthur Weasley was taking his family up to London to 'educate them on the wonderful muggle world'. They were strolling through Covent Gardens looking at all the street performers
Fred and George: (helping with acts) Wow! Who knew muggles could do this?! Ginny: (clapping excitedly and giggling) are you sure they arent wizards mum? Molly: (staring anxiously at the acts) Mind you dont hurt yourself, dear... Ron: (staring jealously at the money) Do you think i could do that? Bloody hell...