when you cannot go in your room because your room mate is having sex

refering to "exiling" your roomate (usually in a college setting) from his/her room so that you can engage in sexual activity without voyeurism.

To be exiled from your appartment or room because your roomate is having sex with someone.

When politely asked or forced from one's room in order to create the private atmosphere most roommates need for coitus with their special friends. Incidentally, it is what I am right now.

The past-participle of the verb sexile.
To be banished from one's room (most often, a single-space dormitory room) so that the roommate may engage in private sexual intercourse. Generally speaking, sodomy, cunninglingus, fellatio, and most forms of foreplay consitute grounds for sexiling.

you get sexiled when your roommate asks or forces you to leave your room, because s/he wants some intimacy with his/her S.O.

A term in which college age students use to describe being exiled from their dorm or apartment when one of the roommates is engaging in sexual activity. This usually happens because the occupant does not want to be interrupted. A way in which to notify the roommate would be to hang a "You've Been Sexiled" hanger on the outside door handle of the residency. These hang tags can be found and downloaded for free at www.thesexiled.com