There are people who refuse to pop their zits, I guess they don't want to damage the skin or something? You see them walking around with a big zit on their face where you see the white pus underneath, disgusting. I could never just let it sit there, it must be popped! LOL. Sometimes when I had a zit that was deep and was difficult to pop I pricked it with an insulin pin first to get the pus out. I don't know where it comes from but it's soo satisfying to get the shit out.
I have watched horses with massive abscesses be drained and it must be such a relief for the horse.