Working at the Cavern Club of Beatles fame (1960 till 1964) one Rather hectic night, some older customers were let in, newer staff.
Fight started, I got what I thought was a punch in the back, carried on fighting.
Threw the offenders out in the street, myself and another older person (almost thirty!) resumed our stint on the street entrance.
My partner on the door said, "What's that on your back?" the whole of my shirt was dark, the lights made it look black.
When I started going weak, off to the Emerg. Small wound, to the left of my right kidney!
Dr. said "Inch to the right, you could have had in a big problem"
I got stabbed twice in those 4 years.