I've been asked a couple of times, and you may or may not be wondering, why 'parameduck'? I didn't just decide that because it sounds similar to paramedic and I like ducks (I'm not obsessed with them, but they are better after seeing an oven!) There is actually a reason!
I can't remember where I first heard the quote but someone once said “Be like a duck. Remain calm on the surface and paddle like hell underneath." Which is kinda what you're doing when you're paramedicing, only not in a duck pond while having bread thrown at you, hopefully!
So what I'm trying to say is, when you turn up on scene and people are there panicking, it's your job to appear chilled out and relaxed and not join in with the panicking ie. be calm on the surface! But underneath that cool, calm exterior you're 'paddling like hell' to change the situation and help the patient!