I had an absessed molar to my sinuses and that mug was the worst pain in my entire life. After work or a workout it would pulse with my heartbeat and put me in tears for about a week straight until I had the balls to man up and go to the dentist. I was popping 2- 800mg Motrins and that wasnt doing shit for me. Hands down the worst pain Ive ever felt, even worse than my surfboard impaling my cheek or a horseshoe to the dome from 30 ft away.