What causes IT Geeks to tell incredibly exxagerated stories about their technical prowess. Effects usually occur when a group of three or more geeks gather, often in the presence of female company, whom they promptly start to ignore in effort to top eachother's epic tales of prowess.
At a party, geekosterone causes the chicks to leave when they hear:
"I rewrote the kernel for Vista, and it was stable and actually worked, but M$oft fired me and buried the code cuz they wanted to shackle the users.'
"That's nothing, I, well actually my cousin in one of those Swedish countries, helped Linus write his first assembly program."