Like how to sex a chick. "You can hold it by the neck, and if it kicks it's a boy and if it doesn't it's a girl" is one I've ran into a lot. Another one of the same type is "Hold it by the legs and if it holds still it's a girl, and if it doesn't it's a boy" as well as 'the pendulum method' and...
Oh, that's cool! I didn't know they could do that, and it's deterred me from reporting some threads because both have different replies.
After seeing this thread, I've been trying to answer other people's questions as well. I know that there are many people who are more experienced than me...