Maybe it says "inspected by #3" or size 34 or something plain and typical like that. Perhaps it says, "Fuck you! And Fuck your $40 pants!" or "I hate this job!". Maybe it says, "Hey there enjoy your pants!" One can only guess at these sort of things. It is strange though, finding a slip of paper written by someone you have never met, and probably never will meet, in a pair of chinos. Sort of like a message in a bottle I suppose.