Or people that are not students are entering the math department to inject drugs on the toilet. Edit: For who ever downvoted this - it isn't uncommon. In the T

Or people that are not students are entering the math department to inject drugs on the toilet. Edit: For who ever downvoted this - it isn't uncommon. In the Technical University of Vienna 15 years ago blue lights were installed on toilets exactly because of this. There were a lot of drug addicts in a nearby park that used the Universities toilets for injecting. (because they are free to use)