Um, where's the size cutoff between shrimp and prawn? At what point are prawns prawns? Or are there different species that make them what they are, so a shrimp can't just grow into prawn status?

And are shrimp cocktails really prawn cocktails? Some of those ones are pretty big! I'm also assuming that coating a shrimp in a lot of batter before cooking doesn't make it a prawn, as many Chinese restaurants would have you believe.