Two couples decide to spend the weekend away together at a posh hotel.
When they get there, one guy suggests they indulge in partner-swapping as a trial.
After two hours of solid sex by the fireside, the guy turned to his new partner and said,
“Wow! This is the very best sex I’ve had in years! I wonder how the girls are doing?”
This joke is included in the Black Book of Jokes. You can order it from here.