cub run death grip Share definition Flag When you grasp a penis so hard, it turns bright purple. The nurse KTB, was inserting a foley and squeezed so hard that she gave Jimmy the Cub Run Death Grip and hurt him badly. He said "ouch". cub run death grip by Marsha Marsha Marsha ❤️ August 9, 2017 Get the cub run death grip mug.