As a Phd student me and a couple of office mates did this at work one day. The fish, the white crispy bread (whatever it's called in English?), potatoes etc. fo

As a Phd student me and a couple of office mates did this at work one day. The fish, the white crispy bread (whatever it's called in English?), potatoes etc. for a proper "klämma" sandwich. Once you get over the smell, it's quite good actually. Oh, the smell. We did chase everybody else out of the coffee room when I opened it (using the bucket trick, yes). A bit later the lab engineer called me: - I got some complaint about the toilet drain malfunctioning, and that you might have something to do with it? - Uh oh... Sometime later one of my co-conspirators moved on to do a post-doc in another country, where he eventually repeated our stunt. Except he forgot the bucket thing, and sprayed the foul smelling bile on some poor bystander.