Okay...here we go again......
One day when Bobby Bass came home from school he hid from his mother...which he had never done before.
His mom found him hiding in his room and questioned him to come out and talk.
As he came into view she saw what she had dreaded.....his fins were red and scarred showing the signs her son was getting of age.
"How did you hurt your fins" she asked, he resisted and then said...
" Davie took me to see some girls at the ...Spawning Flat."
"OH MY!" she barked and continued...
"Your too young for that!"
"Mom I'm almost Three seasons old....All the three year fish were there!" he countered...
"And dont worry, I did'nt spawn or anything..."
"Howard...Get in here our son is Nesterbating!" she yelled
Howard...a much smaller and meek fellow came into the room and said in a quiet voice..."Yes Dear?" Seeing his son he yelled.."THATS MY BOY!!!WHOOOOHOOOOO!"
To answer your question I would quess three years but remember......Nesterbation is a normal part of adolescence.