lil Johnny in the bank

little Johnny and his mother are in the bank one day. And there  was a very obese lady in a business suit complete with a beeper in front of them. Johnny said out loud"hey mommy that lady in front of us is really fat" and the lady looked with knowing eyes and his mother silently scolded him.. then Johnny said "i bet her butt is this wide" showing the amount with his arms the lady looked crossly at him and again his mother scolded him.. then the ladys beeper started going off and little Johnny said "RUN FOR YOUR LIFE SHE IS BACKING UP"