This is my biggest play fantasy and my wife has a similar one. Both of these are what have us talking more about going to a club.
Firstly my wife gives incredible head mainly because she loves it. I think my fantasy started because I felt bad that I was the only one experiencing it, for the last 30 years anyway.
My fantasy is we are at a club and we have met a guy we like, he's BBC. We chat for a while and I go for drinks. When I get back she is on his lap playing with his cock while he fingers her and sucks her tits.
When she sees I'm back she kneels between his legs and sucks his cock, I get behind her and finger her pussy while he plays with her tits.
After a while she moves to the bed and lies on her back I start to fuck her and her puts his cock back in her mouth, I'm watching a mix of face fucking and her sucking.
Finally we all cum together, her on my balls, me on ther belly and him on her tits.
Her fantasy while she masterbates is sucking a line of cocks. She's never mentioned if she is working along the line or the line is working its way through her.