if you mean biological grampa then the only way would to go back in time sleep with your grandmother leave go back to present time and tada you would be your own grampa but if you marry your grandmother you technicly would be your own grampa

You are from West Virginia.

You married a widow with an 20 year old daughter. Then, when your father married the the widow's daughter you instantly became your own grandpa. Explanation: - You marry the older woman. -- This results in the woman's daughter becoming your stepdaughter. ---- Subsequently, your father marries the older woman's daughter. ----- The woman's daughter, being the new wife of your father, is now both his stepdaughter and his stepmother. Concurrently, your father, being his stepdaughter's husband, is also his stepson-in-law. ------ your wife, being the mother of his stepmother, makes her both spouse and step-grandmother. ------- The husband of the your wife would then be the your step-grandfather. Since you are that person, you has managed to become your own (step-)grandfather.

Your name must be Philip J. Fry :)

Your Fry from Futurama.

This should explain it. :-) Many many years ago when I was twenty three, I was married to a widow who was pretty as can be. This widow had a grown-up daughter Who had hair of red. My father fell in love with her, And soon they two were wed. This made my dad my son-in-law And really changed my life. Now my daughter was my mother, Cause she was my father's wife. To complicate the matter Even though it brought me joy, I soon became the father Of a bouncing baby boy. My little baby then became A brother-in-law to dad. And so became my uncle, Though it made me very sad. For if he were my uncle, Then that also made him brother of the widow's grown-up daughter Who, was of course, my step-mother. Father's wife then had a son, Who kept them on the run. And he became my grandchild, For he was my daughter's son. My wife is now my mother's mother And it makes me blue. Because, although she is my wife, She's my grandmother too. Now, if my wife is my grandmother, Then I am her grandchild. And every time I think of it, It simply drives me wild. For now I have become The strangest case you ever saw. As the husband of my grandmother, I am my own grandpa

ok expect an answer later i have to think on this one il get it right