I am Iron Woman too.
Because funny and bunny rhyme, apparently?
It's something to do with the acronym B.U.N.N.Y. Since we are talking about skiing, I'm thinking that bunny slopes may be involved. Then we have a specification of 45 degrees, and the penguins are clearly incompetent skiiers for going down the hill at 45 degrees, if it is horizontal, and one of them crashed into a tree. But why is there a helicopter? Helicopters are supposed to rescue people who are in medical trouble on the slope.
So I think it is a "perfect storm" of things - the helicopter just happened to be there at the correct time to rescue the injured penguin. This is more likely to occur on a bunny slope because incompetent skiiers are on bunny slopes.
Rex is a skiier, apparently.
takes out English major crossbow and shoots at joke