ariadne, I never felt it was barbed. He wasn't that kind of guy anyhow. It was his way of telling us not to tell him we were bored and that if we were then we should do something about it; it wasn't up to other people to entertain us out of boredom.
Actually I think a little bit of boredom is good for people. It can be used as standing and staring time and letting things fall into place. That's how I use ironing (and knitting, so long as it's not a complicated pattern) because although it requires a small amount of concentration (mindfulness), it does leave the brain time to settle and calm down. I use washing-up by hand in the same way. So what other people might call boredom (or boring), I call calming. There is something very satisfying about doing even "boring" tasks properly.
No, I'm not advocating ironing, just arguing that it isn't boring from certain viewpoints, but a stilling activity and that I value those.
And I agree with what my dad said – one's boredom is one's own responsibility.