I've no idea what natty means.
I'm glad you masturbate a lot. Alternate hands so you don't grow one to be bigger than the other.
Anyway, in case this is a serious post, no you are not too old.
Don't eat fast food, pizza, sweets, coke and other crap, alcohol. Eat good food. If you have a mom she probably has a roughly decent idea what good food is if she ever cooked.
And go do full squats, bench press, overhead press, deadlifts, dips, pull ups, rows.