I forgot to take off my rollover outfit today and spent a few adventures with the staph. When I was about to log off, I noticed this in the session results.
I would recommend adding something to your login script (you have one right?) that checks to see if it's equipped, and puts something else in your hand if so.
Tongue-in-mouth suggestion: make mafia force error state when it discovers equipped staph (or anything else that makes parsing results basically impossible).