AGE JOKES!
1st joke
YO MOMMA is so old that she owes Fred Flintstone a couple bucks.
2nd joke
YO MOMMA is so old that she owned the key that Ben Franklin used on his kite.
3rd joke
YO MOMMA is so old that she had her driving test on a dinosaur.
4th joke
YO MOMMA is so old her money was made with stone.