Dangerous phrases in aviation….

Inspired by a text conversation

·         Trust me

·         Watch this!

·         What does this do?

·         What happens if I pull the red knob out?

·         Of course I know where I am

BTW I'm writing this from a slightly different airport this morning. About to be a passenger :(
I really hate commercial flying and you know its stupid-O'clock in the morning when not even Timmies is open !!