The resulting "shock" is caused by muscles twitching uncontrollably, appearing as muscle spasms. Catherine begins to cry as Robert descends into confusion and begins to shiver uncontrollably. Cielo was very emotional after the race and sobbed uncontrollably. President Nixon sobbed openly, profusely, and at times uncontrollably during the ceremony. Jake falls to the floor and bleeds to death, while Christina and Samuel sob uncontrollably. The countess entered the room again to find Elisabeth distraught and weeping uncontrollably. The subject may then be tickled, sexually pleasured or otherwise enticed to move uncontrollably. He begins to panic and bleed uncontrollably in the bathroom. Pius is reported to have broken down and wept uncontrollably. The duo is equally competent when it comes to making you laugh uncontrollably. This caused host Greg Kinnear to laugh uncontrollably on camera. The quip caused fellow guest Angie Dickinson to laugh uncontrollably. It goes wrong and Amelia begins bleeding uncontrollably. Cancer happens when cells continue to grow uncontrollably. Their mating ritual begins by the male snake vibrating uncontrollably.