Heheh, maybe that's the answer?
She called back and I suddenly recognised who it was (I don't really know her well). I said "Is this Sarah?", and she went quiet for a few seconds and said "yeah, who are you?" and I said "you're my mates ex-gf", and she went quiet. I said "Do you know who I am?" and she's like yes. I asked what she was doing calling me at 4am and she hung up.
BACKFIRED!! Hahaha, that sure felt good,
I'll bare the obnoxious thing in mind. Sounds like a lot of fun 