The JWs have some peculiar rules regarding doing things with the opposite sex. Truly, the most bizzare one has to be the one about if a "brother" is driving along and he sees a "sister" waiting for a bus and he offers her a ride, in most cases he will make her sit in the backseat. Even MORE likely, the "sister" will turn down the ride because it may "stumble" someone who may see them together.
What other scenarios can you think of when it concerns two JWs of the opposite sex to which the WTBTS has rules for?