summerfish
This is a term used by bands to describe the ones that they met whilst travelling. The summerfish is simply a groupie. The one that gives you great times and pleasure (and usually sex), but it's only for beautiful summer months.
Mike: Hi dude, do you remember this busty chick we met in June in Prague?
Henry: Oh yeah, she was a real summerfish.
Henry: Oh yeah, she was a real summerfish.