“Don't interrupt me while I'm interrupting.”
“And now, excuse me while I interrupt myself.”
“Don’t talk while you’re talking. It interrupts me.”
“I'm being ironic. Don't interrupt a man in the midst of being ironic, it's not polite. There!”
“Lord Sedgecroft--""Ssh. It isn't polite to interrupt me when I'm kissing you.”
“Excuse me, but I'm very tired of being interrupted and ordered around and spoken to like a recalicitrant eight-year-old.""Then don't behave like one," Brian suggested.”