Son in law perks

Unwritten universal truth. Son-in-laws eat lots of chocolate biscuits at their mum in laws. Unusually, Granda didn't partake, but that's because he was heading off to the national table tennis assessment in Edinburgh, although he's already secured his place on the Scottish team again. The big question is, where did the sporting gene go in his kids, Cheryl and I seem to have mislaid them????