Comment by fwlr

If someone tells us about their new method for practicing guitar, it is very natural and not at all a toolish behaviour to hand them a guitar and say “go on, play us something”.

In fact it’s actually a very socially agreeable action, as it gives them the opportunity to show off their new skills without them looking like they’re bragging.

Now, if you happen to know for a fact that the guy cannot actually play guitar, then you’re just setting him up to embarrass himself, which is maybe an extreme punishment for the relatively minor crime of spouting some bullshit. I could buy that that is hostile, sure.