First off dont worry! I'm not getting a massive diaper or paci tattooed on me, but i've had a tattoo idea for a while and i think an ABDLesque gesture is in order.
The plan is a ripped skin tattoo (Google is your friend, they're not scary just cool) below my left pec (I feel really douchey calling it that but i have no idea what to name just below the line there), it to have a dark blackey purpely background with hints of red and pink, and to contain a few ideas.
So far the only things i can think of are
A deathbat - Avenged sevenfold
the name Katie - Sissy name and also a coping method
maybe something sailingy (I'm a yachtie)
But I cant for the life of me think of a babyish thing that if i showed someone they wouldnt think what the hell is that, but at the same time i know its there?