Gay vibes, positive. Most commonly seen in gay men cheering on their female friends in a sexy, but not sexual (predatory) way.
Anna: I don’t know if this dress looks good on me..?
John: O.M.G. girlfriend! I need to splash some water on my face to stop from faintin’..! You look de-li-cious!
Anna: You are such a mood! Your gibes are the best. Thanks!