When you send a text to someone and they take too long to respond and you know that at some time they had to have read your text but just haven't text you back on purpose. Then when they do respond its random and completely unexpected. Just like fishing, you put the hook in, the fish look at the meat but don't bite until you least expect it so you're just sitting there looking at the water the whole time until you get a bite on the hook.
Hey how are you? What's new with you? Are you doing anything tonight? sent at 11:00am Friday
I'm good. Response at 1pm Sunday. That's what you call a "fisherman Text".