-thumb and index finger used -thumb and index like a wide V or a slightly slanted gun - space between thumb and index goes below your lips
The answer could be a signal for ( Smoking hot ) like when you nailed a problem.
It's not really a V. It's actually an L. Whoever gave that sign to you was telling you he thinks you're a Loser.
Is this what you are referring to?
Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them