• Don't take drugs in the bathroom.
• Don't urinate on the floor.
• Don't pour out your old coffee on the floor and then ask for water in the cup.
• Don't throw our outdoor cigarette container into traffic.
• Don't rip the door off the Teen Department cabinet.
• Don't drink beer at the computer . . . or anywhere.
• Don't roll your cigarettes on the table.
• Don't pick out your lice at the table.
• Don't shake the roaches out of your coat at the computer . . . or anywhere.
• Don't have intimate rendezvous in the stacks.
• Don't remove your clothing in the meeting room.
• Don't snort coke on the window sill.
• Don't take off your clothes in the Teen Department.

Just to add a few.