Contrary to a widely-held belief, driving in flip-flops is not specifically illegal as a primary offense in most places, including every U.S. state.

But it may still get you into trouble and put you on the hook for some big bucks. Thats because you’re typically expected to wear “appropriate” footwear, so if you’re wearing flip-flops or other loose shoes and they get caught on a pedal and cause an accident, you’re potentially facing a reckless driving or similar charge.

Penalties vary state to state in the U.S., and usually aren’t quite so severe, but are still costly. It can be as much as $300 for first-time offenders in New York, and $1,000 plus 90 days in jail in California, depending on the severity of the incident.

You’ll want to be particularly careful if you’re heading to Virginia Beach, however, because reckless driving is a class one misdemeanor in the state that can result in a $2,500 fine and a year in jail.