A man being lifted by a crane, with a hook through his nostril...

When I was 12 or 13, a new kid arrived in my year at school. The first I heard of him was a conversation that went:

Have you met that new kid, Peter Knight?

No - why?

He does a great impression of a man being lifted by a crane, with a hook through his nostril...

And, sure enough, he did! 

Aged 12-13 - that proved to be sufficient basis for a friendship that lasted for a year or two; until he moved somewhere else, and was never seen again. 

Note: I also mentioned this memorable event eight years ago in some autobiographical recollections.