There was a similar idea posted a while ago but this one is equally good.

The analogies for Apple iPad Tablet seem to be endless (see examples like Disneyland, Walmart, Segway or swiss army knife) and here is one likening it to a prostitute:

The iPad is sexy like a prostitute is sexy.  It looks good when you see it on the corner, it looks good in the dark, and it feels good in your hand.  But afterward you find out that it has many unanticipated side effects you didn’t anticipate.  Limitations you didn’t expect, additional fees you weren’t expecting, and you ultimately realize that you didn’t really need it in the first place and drop it back off on the corner you picked it up at.