I have a really weak stomach for nasty videos.
It still sort of amazes me that people love watching pimple popping and other totally gross things. To each their own, but when you see what happened to this poor cow with basically the biggest pimple ever, you might be turned off of them forever. WARNING: this is very, very graphic.
This cow has a cyst that's basically the size of your head. It's probably in so much pain, and it clearly needs to be dealt with.
The vet carefully pops it with surgical instruments, and that's when the pus and blood really start flowing.