This just goes to show how badly you can misunderstand a new word. Someone said to me 4さまが好き?
4さま could refer to somone in their 40’s, I guessed. I.e. the same as 40代（だい）. I thought this for a few days until I checked with someone. It turns out that it was a lot simpler than I’d thought.
Not 4さま but ヨンさま – the name of a popular Korean drama actress on Japanese TV!