I have two actually.
One is being cucked by my wife with a doctor she met a year ago or so.
I'm striving to make it happen, but didn't succeed so far.
The key is convincing her to have one more exam, after he made her cum twice (and even squirt), and she left him undone because she was too much embarrassed by the situation.
For details read my post here:
I've fantasised a lot about that. You cant imagine how much !
The second one is watching my sister-in-law (Linda's sister) cuckolding her husband. I know that she fucks other guys, but have no evidence.
In the past I've fantasised a lot about fucking sister-in-law, but it's a few years that this second "indirect cuckold" fantasy has taken the place of the former one.
I've tried to give explanation to this odd feeling, which seems diminishing - in a way - my masculinity. But that's a fact: I would rather prefer watching sister-in-law cuckolding hubby, than fucking her myself. I'm honest.
-GordonPym