Using war analogies
"I've got an idea for..."
"Whoa, easy there. You can't just charge in without a plan. That's how you get ambushed."
"We just need a few engineers to..."
"Oh, so now you're talking about sending in troops? This is how things get out of control."
"It's just a feature that..."
"We need to set up a war room, gather supplies, make allies, stock up, and get ready for the worst."
"I'm done."