Sex dungeon

[Justin Bieber]

Any form of dungeon where sexual activities occur.
At one extreme this is a spare room in a house containing some vaguely dungeony artefacts like plastic handcuffs where a consensual couple may role play S

[Britney]

When your friends start hooking up with a new girl and you never see them out with their boys anymore; they are in the sex dungeon.

[Guest]

when the boys don't want to ride you