My sister teaches at a small private elementary school that is small enough that all the teachers and all the families know each other. She was out on the playground after school one day watching the children of fellow teachers and some families while thier parents did parent/teacher conferences. They have a fire ant problem, but the school kids know where the mounds are and now just avoid them. She said that day there was a 2 year old sibling out there playing with them and he accidentally wandered into one of the mounds. He, of course, started screaming and the other children immediately starting yelling "He's in the FIRE ants. He's in the FIRE ants!". She snagged him up and got him brushed off and washed off. As she was treating his bites and he was snuffling to himself, she asked him if he was okay now. He snuffled a little more and held up the hand that had gotten bit and finally said "I fink so. I'm not on fire." Poor baby apparently was having visions of bursting into flame. She rushed to assure him that he was not going to spontaneously combust but rather the term referred to the fact that the bites burned so bad. Poor kid was just waiting for it.