When I was little, I had 2 imaginary friends. My favorite one was named Lisa. Once my mom took me out for ice cream, and as we were leaving she held the door open for me, and there was a mother and daughter behind me. I went through the door and said "Come on Lisa, hurry up!" and the mother behind me looked suprised and said "How'd you know my daughter's name???". I got so embarrassed as my mom laughed and explained that Lisa was my imaginary friend!