Flypaper effect is when something sticks so well that it is hard to get away from it. It's like flypaper, which is a type of sticky paper that catches bugs and other flying insects. The flypaper effect happens when something is so sticky that you can't easily escape from it. For example, a situation where you are stuck in a difficult financial situation could be called a flypaper effect. You feel like you can't get away from worrying about money and bills, no matter what you do.