Earlier quoted context omitted.
Do you tell your clients before taking on work about your requirements, or is it first strike you're out?
I alternately contract and consult, and I wouldn't think it necessary to tell a client that, if they endorse yelling as interaction, I'm not sticking around. That's normal-people stuff--they should already know Because healthy environments don't do that.
Surely some clients do yell, and presumably if they think it is acceptable to yell, they would be surprised at an abrupt end to a contract!