When I was 13 I got this enormous boil on my calf, it was so painful, I couldn't even walk properly on that leg as the whole thing swelled up. It was also burning hot, and I had a fever, the doctor recommended a hot poultice to draw it out and then I lanced it, the pus was yellowy green and thick, it fountained out, the relief was huge but it lasted ages, and the skin was terribly bruised, and flakey because it had been so stretched. it left a hole in my leg about 1cm deep, and I still have a scar about the circumference of a five pence piece. Of all the online sporn I've ever seen there has never been anything that huge.
Also when I was 17 I got a boil just under my eye just next to a mole, my eyebrow was raised by about an inch, I was terrified of getting a huge scar on my face so was very careful not to fiddle, I had it drained by the doctor and had a black eye afterwards but it throbbed like hell and loads of smelly yellow gunk came out. I've never felt so ugly in my life.
Skin ok since about 19 and nothing significant since.
Although my Dad has a blackhead on his forehead that is marvellous, he is very protective of it but it's deep and the stuff that comes out is thick and like a really long thick strand of the vilest smelly fettuccine you've ever seen.