I am amazed that in this day and age, people are proposing that this chick act in some violent way shape or form.

All her roomate did is make it real clear as to what type of person she is. Retribution in the form of violence is the wrong way. Ya'll are nuttballs.

I heard peeing on her bed. Okay, pranks like that [of course after you move out] are some what reasonable.

Me personally, I would go for the frozen boiled egg. Freeze about a half dozen of them. Now, placement of them is key. If it is two obvious, she will "discover" the source before it really causes any discomfort.

I mean, cleverly cutting into her bed, taking out as much bed stuffing as possible and replacing with the boiled eggs in a plastic baggy...pricked with holes. Sew it back shut so as to make it look indistinguishable from any other part of the bed.

Or hide somewhere she won't find it. Give her that as a going away present.

BTW I hope you have already raised hell with the dean about relocating...to a single or a better roomie.

The eggs may actually be commensurate with the crime of petty theft. Be sure to wear latex gloves and not get prints on it. Serious there, she could re raise hell over it. Be sure to hold a good full night of party to...so the suspect list is at least over 6. 6 is the magic "who done it number"

BTW I have done this to a very deserving individual. It worked. It took over three weeks to locate it. By that time, the room smelled so bad it was uninhabitable. BOOYEA!!