What's your fantasy? (Cuckold)

This is more than nothing for new people since many already know me. Tell me what fantasy you most frequently have with your wife, friend or lover. I have the fantasy of seeing my wife with someone else, maybe she only gets excited following along. She always tells me not to be afraid to say what I feel and that she feels very fortunate that I make her feel capable of enjoying her sexuality. Months ago we used a dildo, she would suck my penis for a good while and then decide to suck the dildo while I was penetrating her, it was so exciting to see her so focused sucking while I was penetrating her, that I couldn't hold back much and came in bursts. It's been two weeks since we've had sex like this because of visitors, the last time was a few days ago when we snuck into the bathroom but could only have a quickie, now we want to get it on good and tasty. The last fantasies we've had are infidelity ones, where I switch from being the husband to the neighbor, my wife is unfaithful, my husband doesn't please her and as lover I have the biggest cock, that if the husband discovers us he'll either stay watching or join in a threesome, that if as lover I don't satisfy her she'll look for someone else who will, well I think she already knows me pretty well and surely knows that this thing of being a cuck gets my attention. I'm looking for your advice, how should our sex be when the visitors finally leave? What do you guys think?