Joetc

Hey guys I have a problem with my headlight last night got home turned my lights off closed the door locked the car lights came on! Went back in double checked the light switch was off re closed lights came on! With the switch off and the car off my lights are on I turned the car on the lights turn off as normal because the switch is on the off position cycles threw the switch on off on off lights work fine turn the car off lights turn on after the cars off

any clue to what might cause this??
thanks!