Help! my dad asked me the weirdest question today!?

First of how old is your dad, 6-8% of people over the age of 65 have dementia a further 30% over the age of 85. secondly are you sure he wasn't just joking around because he might of been just teasing you. thirdly take him to a trained doctor or psychiatrist or something and dont go asking questions like this on yahoo answers because people need to know the physical state of someone before diagnosis. so my recomendation is take him to the doctor just to be sure and get him checked out