"Hello pirate ... my cargo? Well, here you go, please don't shoot!"
<both fly off chuckling to themselves for different reasons, followed by a soft pop when the pirate loses control and smashes into an asteroid. Or similar.>
Whatever you do don't call them Tribbles. They're Trumbles. If you call them Tribbles you'll be descended upon by squadrons of Vipers piloted by copyright lawyers.