She's just turned 7... her mum walked out on them when she was 3, to go live with a new guy but sees them a few times a week now.
She is extremely preoccupied with private body parts, especially male ones
She will say words like willy, nuts, balls, boobs, nipples to name a few, but, she will also grab and fondle my DP and her grandfather, whilst stating something like 'daddy's nuts are squishy'
WTF?!
Now DP and his parents laugh it off - he tells me she's getting all this from YouTube, but she watches videos of animated dancing willies and bums all the time, it's close to obsession 
She is a very disturbed little girl, very clingy and baby-like (wants to sit in baby high chairs in Maccies, etc) but gets away with everything!
I'm just very unnerved atm with the obsessive preoccupation with all things sexual? Or am I being OTT and it's just mere curiosity? 