I made one kid really mad. She was maybe 10 and I was mid 30s. She was playing with a friend and yelled out "MARCO" and I yelled back "POLO." She opened her eyes and glared at me like I had punched her. If I remember she even got out of the pool to tell her mother. Mom never said a word to me but I sure got the looks. Sheesh! All I did was yell polo.