You were a teenager, and like any other girl, your first period arrived. His father was irresponsible, and would hardly be a good person to deal with. He would probably scandalize you, or just have a reaction you would never expect. But since he was a single father, you had no other option but to tell him.

"What? Tampons? Is that for eating?" He asks, at his leisure, thrown on the sofa, like a cushion without padding, and meanwhile a television program was echoing behind you.