Hasselburger Share definition Flag (n.) A cheeseburger eaten off of the floor while drunk. This is derived from the famous David Hasselhoff cheeseburger video. "Are you going to stop drinking, dad?" "I'll be fine, just let me finish my Hasselburger." Hasselburger by Ricky Bobby Lee October 9, 2011 0 0 Get merch Get the Hasselburger mug. Buy Now — $32.95 See more merch