One if by Phone, maybe 2 or more?

[AllenJames]

Husband and wife host wife's friend who is traveling solo, but will meet up and return with her boyfriend a week later. Husband overhears friend having phone sex with her boyfriend, watches for a while and then steps in to help - as boyfriend watches and listens, then wife discovers friend and her husband - watches and then joins in. While boyfriend watches! And in a week all 4 of them will be there. It could go any number of ways -

 

[Rob_Royale]

I like this. The boyfriend has set this up for his girl's birthday. She's confided to him that she secretly fantasizes about her best friend and her husband. The boyfriend sets this up so that the couple begins to slowly seduce her until she's wildly horny and lets off some steam with some video sex until the husband steps into the room. Definitely a hot idea.