The place in a club, most common a gay club, in which sex happens

Dejagoo is the strange feeling that you've been in this sticky situation before. It is dejavu due to goo. Usual symptoms are shivers down once's spine followed by disgust, especially if actual goo is involved.

the place in the back of a building where you go to fuck someone or where you get raped

A back room can be defined as either a sex room or a game room.

When it is a sex room, the partners, or party, partake in "activities" of which genitalia meets genitalia. This is often referred to as back room sex.

When it is a game room, the user of this room participates in playing various video games. This is often referred to as back room gaming.