Internet slang for an under-age girl.
Pedo - "Wow, dude! I met some fit hard candy on the chatroom last night!"
Similar to a man/girl crush. When you become obsessed with someone of the same sex because they are cooler/prettier/sexier than you. You don't acually fancy them you just obsess over them in a jealous way.
Girl: "I totally have a jealousy crush on Megan Fox, she's soooo pretty!"