What kind of fisherman are you?

I prefer studying in coffee shops. The activity and dull noise there keeps me alert, but doesn't distract me from what I'm reading. The best is studying in coffee shops with a good friend - one with whom you can take a short study break to discuss what you're learning - or any other topic that pops into your head when you're supposed to be learning:) Anyways, last week I was studying in a coffee shop (unfortunately alone this time), and I was doing just fine until a guy came to sit with the boy across from me - and the two began talking. They were not providing the kind of background noise that I appreciate, rather I could make out the words of their conversation. At first it was just distracting - talk of sports and weight lifting, blah, blah, blah. Then a couple of girls came over to talk with them - more distraction. At this point I decided to get my i-pod out to provide my own coffee shop background noise. After the girls left, and as I was searching for Beethoven's opus 9, the one boy asked the other, "so what kind of fisherman are you?" The other guy was as clueless as I was, so the boy explained. "You know, are you a fly fisherman? do you just go after that one special girl, or do you fish in shallow waters and catch a bunch of fish or whatever is around." I put my earphones in, but did not press play. Unfortunately, I was unable to get a further description of all the possible types of fishermen there were. The guy just responded, "I don't know, but there's an awful lot of fish in the sea."