There are some thing you shouldn’t try at home, and this guy learned the hard way. If you want to skip ahead to explosion, go to the 5:30 mark of the video, and you’ll also his girlfriend scream.
Word of advice — watching YouTube video on how to pop a cyst may not be the best technique. But, here’s what he says happened
A lump formed on my left arm around 2003 it was so small and cause no pain or any sort of discomfort so I thought nothing of it. One day I must have bumped it at work causing it to inflame and grow overnight, the pain then started and was sensitive to touch. The pressure built so rapidly I decided to call my doctor and was in the clinic that day, it was diagnosed as a sebaceous cyst and treatment was a bottle of antibiotics. A few days past and the pressure continued to build so my girlfriend and I decided to do our own research on this crazy painful lump, Google results informed us it will come to a head (as you want it to) and squeeze out the infection. We used a hot compress off and on for hours until the cyst had a decent sized white head on it and watched a couple YouTube videos to see the best extraction strategy. Once I had seen how easily this seemed to be to extract it was time to take action! I had my girlfriend sterilize her tweezers and proceeded to clean and disinfect the area with alcohol as well as making sure we washed our hands with hot water and antibacterial soap. My fingers are stained from the outdoor labor my job requires me to do (stained hands are not dirty hands) to those of you who may comment on my personal hygiene being a factor in this. I had my girlfriend ready to extract it for me, last minute I decided I wanted to get it done myself and had her record with my phone (Galaxy S3) not expecting what came next…
We weren’t expecting what came next, either.