To forget your money or means of purchasing food, while putting your purchases on others tab.
Waiter - "Okay, your meal is $14.50"

Mike - "Oh shoot, left my wallet in the Cruiser', Dan, can you spot me this time?"

Dan - "Dammit Mike! You gotta stop grimalding me at lunch!"
by Phantom Sock Puppets January 23, 2014
Get the Grimalding mug.