I watched a sitcom, there is a conversation like below A: Girls, you won't believe what happened to me this afternoon. I met Mister Terrific! B: Don't be so quick to judge. I once thought I met Mr. Terrific. Turned out there was also a Mrs. Terrific. I found myself ducking a Mr. Vase. What does the last sentence mean? What is the meaning of "duck" in this sentence?