plankton for president?

This was a conversation today between Shawn (age 5) and Gary:

Shawn - "Dad, was Plankton ever president?"

Gary - "Plankton? No."

Shawn - "But you told me two days ago that Plankton was president!"

Gary - "Shawnie, no one in Spongebob has ever been president."

Shawn - "But Dad, you told me Plankton used to be president!"

Gary - "Plankton...Plankton...(looks confused)........Oh, Do you mean Clinton?"

Shawn - "Yes, that's what I meant, Clinton!"