Literally. 
Had my son's wedding yesterday and last night when the loud music and dancing started, I felt a warmth eminating from my shirt pocket. Turns out the heavy base beat of the music was activating my M201 batteries, main and spare, running them both down and giving the atomisor the hots. I had to unscrew the main battery from the atomiser and only screw it in when I wanted to vape. Fortunately, I had my Janty Stick along as a back up and managed to get through the night.
Had my son's wedding yesterday and last night when the loud music and dancing started, I felt a warmth eminating from my shirt pocket. Turns out the heavy base beat of the music was activating my M201 batteries, main and spare, running them both down and giving the atomisor the hots. I had to unscrew the main battery from the atomiser and only screw it in when I wanted to vape. Fortunately, I had my Janty Stick along as a back up and managed to get through the night.