Cogito cogito ergo cogito sum (I think that I think, therefore I think that I am.) - Ambrose Bierce
Cogito ergo spud. - I think, therefore I yam - Graffito
Cogito ergo dim sum. (Therefore I think these are pork buns.) - Robert Byrne
Cogito cogito ergo cogito sum -- I think I think, therefore, I think I am. - Ambrose Bierce
Cogito ergo sum. (I think, therefore I am.) - René Descartes