This seems to be a male thing and can be seen even in very young boys. My four year old grandson is always ready to show off his latest Power Ranger toys to his friends and to boast of their particular features. When he had a new bike for Christmas it was inspected by his schoolfriends in detail and the fact that it had Power Ranger's transfers not common in the UK was remarked upon.

Recently Kendall and I visited a friend in the UK and I watched our friend do show and tell with his various guitars with Kendall for most of the time we were there. It cracked me up, as it was just the same as with the little boys, just with more expensive toys.

Doesn't seem to happen so much with females.