Speaking as a father of a daughter - what fun can be had the first time a 'boyfriend' crosses the threshold. The stories I could tell. Not many made it twice, just like riding pillion behind my grandad - known at work as "Fearless Fred" and engraved on the calipers he was presented with at the Loco Shed. I still have those calipers, and still use them. He would be proud of that. A pity he could never ride in my Roadster!