An Oklahoma man was arrested for pretending to have autism in order to trick caretakers into treating him like a baby. Mark Richardson, 22, sought out women advertising babysitting services on Craigslist and responded to their ads posing as the father of an autistic teen named "Alex". The babysitters fed Richardson baby formula through a bottle, placed pacifiers in his mouth, and changed his diapers. Police say Richarson, who is only 4ft 9in tall, became aroused during the diaper changings. Richardson's ruse came to a halt after one 18-year-old babysitter's mother suspected that something was amiss and alerted authorities. Richardson was sentenced to three years in prison after pleading guilty to a felony count of sexual battery and seven counts of outraging public decency in July 2011.