Personally I don't think you can start early enough with tattoos.
My fatherly suggestion when my daughter was getting bullied at primary school was to give her some cigarettes - no one will bully a 7 year old who smokes at playtime.
She's just started high school and I've suggested she needs to brush up on her swearing. She's waaaaay behind the curve.
Yep, loads more than I was expecting, when I stand under the closest wheel I can't reach it at full stretch and I'm 6'2"... His other half doesn't like it mind but shes not keen on the bikes in the sitting room either so fair do's...