Here's more interesting stuff from my buddy:

"From time to time, gals will experience what we shall term 'Close Encounters of the Nerd Kind'. This happens when someone attempts to enforce his obnoxious company onto u.

There are three tried and tested methods to repel him:

A)The Moron
This is the most common approach. Pretend to be a moron by uttering moronic responses, e.g.,
Nerd: Hi, what's a beauty like u doing in a dump like this?
U: I dunno
Nerd: Do u know whose party this is?
U: I dunno
Nerd: Of coz, why bother? Say, wat song is this?
U: I dunno
Nerd: So wat abt a dance?
U: I dunno
Nerd: Why do u keep saying "I Dunno"?
U: I dunno

b) The Mumbler
If u think that playing the part of a Moron in public is degrading (and I agree that playing with any one's parts in public is degrading) then u might want to try the Mumbler approach
Nerd: Hi, what's a beauty like u doing in a dump like this?
U: MMNNMBMhjbjK NKJGHKJhj
Nerd: I beg ur pardon?
U: Yessss?
Nerd: Wat did u just say?
U: SDVJBNVFCBMEWRYGIJ
Nerd: Huh?
U: Huh?
Nerd: Dun you think that the music here is too loud?
U: DTYGKJKL:JHJ:LYKIJO"JUBG Sorry I can't hear u. It's really loud
Nerd: Well....
U: fytdeefuhefhrwh dghefjnwjn
Nerd: Huh?
U: wat? sorry, but u gotta speak up. u shouldn't mumble, really. It's such a turnoff.

C) The Macho Masher
This is the most difficult, but most satisfying. U have to be very quick witted n able to mash ur nerd with clever retorts; e.g.
Nerd: Hi, what's a beauty like u doing in a dump like this?
U: Well, this dump happens to be my home.
Or:
Nerd: Hi, what's a beauty like u doing in a dump like this?U; waiting for my boyfriend, eric 'the Emasculator" Chee, the famous gangster who is due to be released from Changi today after he inflicted grevious harm to the last person who asked me what I am doing in a dump like this five years ago
Or:
Nerd: Hi, what's a beauty like u doing in a dump like this?
U: excuse me. Yucks. Is that your nose or r u trying to set a world record for pimple growth?
Or:
Nerd: I think you remind me of someone. You must be a model. Have I seen u in "Go" agazine before?"
U: well, can u read?
undeterred Nerd: No, seriously, I think u are a perfect ten.
U: I also think u are a perfect ten?
Nerd (happily): U do?
U: yah, n that's ur IQ