Q:When is it morally wrong to accept a spare tube from a friend while on a ride?

A:When you have a box that looks like this one full of tubes and CO2 and you didn't take one along for the ride.

Other than the flat I had a good time out at Poor Farm for about an hours worth of riding. Got to ride with some a bunch of people I hadn't seen in a good while. Why is it every time someone pulls out a camera, everyone turns their head?