Get 'em while they're hot: Sonic is offering half price cheeseburgers all day on May 11.

The deal includes single-patty Sonic cheeseburgers only. Any add-ons will cost extra.

Sonic asks that you mention their Twitter or Facebook posts about this when ordering.

There is a limit of five per customer.

Click here to find a participating Sonic location near you.

The establishment offers a wide variety of burgers, hot dogs, chicken, fries, sides, breakfast sandwiches and shakes.