Kidneys

Once there was a 12 year old boy named johnny, and he was home
schooled by his father. One day, at the end of the school year,
Johnny's father was asking him some questions. he said: "ok
johnny what are these" and he pionted to his glasses. Johnny was
concentrating hard nd he said "those, are glasses." "good!" his
father said. then he pionted to the table. he said "ok johnny
this is a hard one. what is this?" Johnny looked at the table
and then looked back at his father and said "that, i think, is a
table." Very Good!" his father said "johnny how did you get so
smart?" johnny smiled at this one, and pionted to his head and
said " I got kidneys!!!"