Mitt Romney’s not being straight with the American people. Even as his Republican allies call for him to release more tax returns, he still refuses.

We already know he has money in a Swiss bank account and tax havens in the Cayman Islands and Bermuda. But even CNN has said that either Romney's stupid or he's hiding something more—so what's he hiding?

We asked MoveOn members to come up with clever, absurd, or outlandish theories about what Mitt Romney's hiding in his unreleased tax returns and rate their favorite responses from other MoveOn members.

Top responses made it onto this hilarious list. Will you share it today?

Why's Mitt still hiding his tax returns? Top 5 answers from MoveOn members