Exactly!
Boardingpass you are a silly-billy! No-one's suggesting we keep people waiting. In fact, in reality I tend to stand up and disembark once the mad-rush has calmed and I can find my bag in the overhead locker and lower it without braining a passing granny. I don't think I've ever actually been the last pax off the plane.
If the cabin crew ever give me fake smiles, it's probably because I'm smiling insanely and dribbling at the pretty hosties while being wacked on the back of the head by my wife...