When geeks have sex, they do it loudly, which is not to say that they make a lot of noise during the process, but that they make a lot of noise after the process. A geek that has had sexual congress must make sure the world is aware of this fact and will therefore mention his or her sexual adventures often. It seems that nobody believes the myth of geek chastity more than geeks themselves and thus they feel they must demonstrate to others how that certainly doesn’t apply to them.
"I've done it with a girl. Intercourse-wise."
—Daniel Radcliffe, Extras