8 yo. With the 2 teachers of my 2 last years in primary school. The 1st one, Mr S. (CM1 class) was also a neighbour and a friend of my family (his 4 yo son and my younger brother were friend). He used to fuck me everyday during morning and afternoon recesses. Sometime, when it was his time to watch the kids, the other teacher would take his turn. Mr S. offered me a pear for enemas, and learned me how to use it. I would ask to go to the bathroom during the first hour, take the enema in the cupboard, and prepare myself.
At the beginning, they would make me expel their cum so that I would not stain my underwear. They stopped asking me that when they estimated my anus was accustomed and muscled enough. I can't say if this was because I was really young or the regularity of the fucking, but it generated cravings in me: even when I moved to secondary school, I tried to see Mr S. in his classroom everyday after class, because sucking my classmates dicks was not sufficient.