My son was into dinosaurs, and we were on an amusement park train ride with a dinosaur section. One young couple clearly on a date, the boyfriend said, "Look at that Tyrannosaurs Rex." My son eviscerated him and said, "Its clearly an Allosaurs!" then explained to him and his date about the differences between T-Rex and Allosaurs. I don't think that guy was happy.
Also find a book that compares a chicken and raptor skeletons that was a wild week. Many Nuggets were lost that day.