The political heebie-jeebies.
Marcia: I might have voted for John McCain but there was just something in his smile that gave me the yankee doodles.
Louis: You base who you vote for off of their smiles? It's people like you who insist on beauty pageant elections that give me the yankee doodles.
A Middle English expression. Ye is pronounced 'e by all except the upper classes. Yank'ee doodle.