Duck President

Duck President first appeared in "You're Getting Old" and was believed to be an imaginary

animal. However, in "Ass Burgers" Duck President is shown to be real, obviously taking Obama's place while he is on holiday.

Lame Duck is usually a term used in politics for a politician that has not kept the promises made to the voting public and would most likely be replaced with another viable candidate in the next election. Therefore, Duck President is most likely a political statement in reference to President Obama.