How to tell parents I'm an atheist

[Brakeman]

Personally I wouldn't come straight out and tell them because that would simply invoke a knee jerk reaction for them to turn angry and try to cram belief down your throat. Rather, I would read a lot of good arguments here in the archive, plus ask us any questions that you think might come up in a following argument. When you are ready, then bring up some of the hard to answer issues.

Worst case = They tell you to shut up, but then they know that you have big questions about the truth of their god story.

Best case = You get them to disbelieve the bullshit too!