My wife's bull is interested in us trying that and my wife has mentioned it also.
What would be the best for a first time experiment, us in a 69 with him behind or her reverse cowgirl with me between their legs?
Well personally I love it when a man comes in my wife.
She is very good at making a man cum even if he didn't intend to. She loves the feeling and gets a bit of her dom feelings satisfied by making me lick her after the man (or men) creampie her.