Bicycle repair man

Three punctured tyres to repair, one of which being the wheelbarrow.

Was talking to a guy at work about it and he asked if I was going to show the boys how to use a bicycle repair kit. I said of course, but isn't it usually a grandfather who is supposed to do this kind of thing (I remember my Grandpa showing me how to repair a tyre on my old Motobecan). My colleague confirmed that it was also his grandfather who taught him these skills.
-> hint at grandparents reading this...

Managed to repair 2 of the tyres. The valve is broken on my bike, not much I could do about that.