nothing, i was just told not to use the teachers toilet again
the girls one was an accident, I beat up a turk of my class and his big brother came who was at least 3-4 years older (i was ~12) so I ran away big time and hid behind the next best door i could find
turns out it was a toilet so i decided to piss because i had to anyway and on my way out i noticed the missing urinals and that was the moment I understood that I just used the girls toilet
there was a teenage girl at the sinks asking me: "and? how was it? :^) ? and i don't remember what i replied or did next but this memory is stuck in my head forever