There have been a lot of scathing comments in this thread about 'crap' performers.

This seems insulting - if someone who happened to be better than you described you as 'crap', I daresay you might be offended.

I would never dream of describing some of the poor performers at the sessions I go to as 'crap'. Even though some of them aren't very good, at least they have a go and can be entertaining in their own way.

Shouldn't we brilliant performers show them more tolerance?