when they’re telling at the ref for something that they are just 100% ignorant about and wrong.
You disagree with a call, that’s a matter of opinion I guess.
If a call is blown, yes the refs should hear it. It’s really the only booing I fully support. Especially if it’s repeated.
But if you don’t know what you’re taking about, defer your booing decisions to your buddy sitting next to you embarrassed.