This actually came up recently for me. I was in McDonalds late one night with a mate, drunk off my face and feasting on McNuggets. This girl came up, and started chatting me up. She kept on trying to hug me and was hitting on me pretty fierce. I had the presence of mind to ask her how old she was. She didn't answer. Being a crafty ************, I asked what school she went to.
"[school name]" First warning sign. But that school teaches up to year 12, which is 17-18 years of age.
I say: "I don't believe you. Prove it."
She pulls out her school ID. I grab it, check the back.
Her birth age? XX/XX/1996. I'm 19.
Oh shit. She's 15.
I tell her that she is way too young, I'm not a pedophile, and I left.
Drunken craftiness at its finest.