For a little while my kid had a circus performer (Belgian not Argentinian) for a nanny. He was just a kid who needed some extra money. Turns out he was realy mountain unicyclng too, which I had not ever heard of before.

It turns out they make cute little unicycles for four year olds. Amazing! All he really learned was unicycling, biking, some inappropriate language in English, and general irresponsibility. All of which have served him well.