He's a computer guy. He must be boring.
Nerd stereotypes are aplenty, mostly false. But when it comes to computer nerds (male, programmers) it can sometimes be true. Here's an advertisement for an online programmer's community website... showing a "hot chick" (why exactly, is anyone's guess). I saw this on another programmer-related website (www.thedailywtf.com).
Now, using women for advertising unrelated products is nothing new. What is funny is the discussion that ensued following this ad's appearance.
Read - http://thedailywtf.com/forums/thread/81687.aspx
Some are especially humorous.. like the second one.. and #81802. They don't sound like sarcasm to me at least ;-P