No. In fact, there is actually no such thing as a gay gesture.

It is an inappropriate gesture.

I wanted to scream when the woman behind me gave me a rude gesture with her middle finger.

No

Twisting your middle finger and ring finger is not a commonly recognized hand gesture with a specific meaning. In some cultural contexts, it could be a gesture of frustration or irritation, but it is not universally understood in this way. It is important to consider cultural differences when interpreting gestures.