Stamford Bridge in the mid/late seventies. I was only about 13 or 14,and went up with a family friend and a couple of mates.
Got snarled at and intimidated all of the way to the ground,scraps all over the place inside the ground.
It wasnt just blokes,there were gangs of girls dressed in jean jackets,and Dr Martens,that seemed to be dying for a scrap.
Been involved in quite a few scary moments since then,but that was the first time i found out that adrenalin was brown.