You must try
When I was 15 I was very experimental with my sexuality, I tried many things, and I got as far as giving a boy a hand job. Anyway, I was rather horny one day after school, I had been all day. I got home and I decided to try to put stuff up my arse.
I managed to get two highlighters up there at the same time it felt so good but then I clenched my muscles and the pens slipped out of my arse, it felt so good I had to keep doing it, I came without touching myself that day.
I've never done it since though.