The kid's mother was the annoying one...
...insisting that he 'make friends' when he's obviously quite happy by himself, or maybe he's after Natalie Portman (I know she's getting on a bit, but she's quite 'well preserved' for a 27-year-old), and then saying he should do it by choosing someone at random and saying, 'Hi!' and then objecting when he brings home a 30-ish accountant. (Don't you think you're a bit old... for dressing up?)
What a loser.
All that on the side, what is the character Eric supposed to be doing in the film? It's not clear how he came to be an effective (underage) co-worker in the store. I know he acts as the narrator (despite the quite false claim that the story is written from the point of view of the freak in the basement).
It seems they forgot to include a proper story.