The act of changing all the details on someones facebook page when they leave it open and vulnerable- Personal details, relationship status, gender, sexuality, political views etc.
May also be accompanied by a sudden affiliation to the Nazi party.
I was fraping Mitchell last night when he went for a smoke- I even got round to telling that stupid girlfriend of his that she's a whiny bitch!
To hijack someones facebook profile and edit their status or info.
John - "mick have you seen Andys facebook status? apparently he loves cocks?
Mick - "John.... you been fraping Andy again?
John - "...... yup"