A little girl walks into the bathroom and sees her older sister just
   come out of the shower.
   The young girl looks at her sisters pussy and asks "What's that?"
   Her sister replies "That is my possum, sis!"
   The young girl replies "Oh, OK"
   The next day she sees her mother get out of the shower and a pointing
   at her pussy again
   asks "What's that?"
   Her mother replies "That's my possum!"
   The young girl again replies "Oh, OK"
   The next day she sees her grandmother getting out of the shower and
   once again pointing at
   her pussy asks "What's that?"
   The grandmother replies "That's my possum!"
   The young girl replies "Oh, grandmother, is your possum dead?"
   The grandmother, looking a little dazzled replies "No, deary, why do
   you ask?"
   The young girl replies "Oh, its just that your possums tongue is
   sticking out!"