i suppose another possibility is that one of his parents/ relatives is loaded and bought it him because all the other kids have got them.
although if you're a bmxer its easy to tell a 'proper bmxer's bike' from a bog standard off-the-shelf bmx, so it does arouse suspicion when you see someone who's clearly not a 'proper bmxer' riding one.
i suppose another possibility is that one of his parents/ relatives is loaded and bought it him because all the other kids have got them.
although if you're a bmxer its easy to tell a 'proper bmxer's bike' from a bog standard off-the-shelf bmx, so it does arouse suspicion when you see someone who's clearly not a 'proper bmxer' riding one.