No. Your sims need to be one of the following:
Young Adult - Any Tattoo
Adult - Any Tattoo
Elder - (Unknown)
Chat with our AI personalities
No, regrettably you only can have tattoos in the version for PC of sims 3.
No you can not spank teens on the sims 3
You should be a teen to play the sims 3.
As far as I know, there has never been a teen pregnancy cheat in any of the Sims
I have played it for a while and my sims have never sneaked out so no. (Edit by Katharine highfield)- if they are teen Sims they can get grounded and they can then 'sneak out' by creeping out of home