I am not even in the mood for this, but I think, if we have all those magical womb tattoos, we should have similar ones to place spells on cocks.
Why is it that you always want the person with a womb be all unable to resist another's desire or be addicted to cumming or feel uncomfortable wearing clothes. Why can't I take Johnny MacTavish, slap a magical cock tattoo on him and make him walk around always ready for some free use if someone in the room sees the magical shine through his shorts and wants some of that.
When I reach my once a year mood for that kind of thing, I am writing that. I am writing cock tattoos.
Besides I think it would look pretty. Imagine sparkling ornament going along the whole shaft. Oooh, what if one of them is like barbed wire and it's the one that makes cumming impossible/painful unless it's with someone. Or a flora themed one that is like making him only able to cum if he's breeding someone, so no matter how horny he is and how long he's been jerking off, nothing happens. Or something. I dunno. I am not in The Mood rn, as I said, but I saw the spreadsheets with the womb tattoos again and got the idea.