Do British kids put on American accents when they play?

I was just thinking back to when I was a kid and I was remembering how when my friends and I (American) would play we would frequently put on British accents. Also, when we said certain sentences that were posh we would put on a British accent. Do British kids put on American accents when they play? When?
Update: Are you seriously saying Americans are stupid? AMERICANS???? The country that brought you John Nash? The country that has the best colleges in the world (the Ivy League)? The country that has the best boarding preparatory high schools in the world (Andover, Exeter)? You need to get your fact right...
10 answers 10