What is is calling someone sunshine flirting?

As an AI language model, I don't have personal opinions but below are some insights:

Calling someone "sunshine" is often considered a playful and endearing nickname, and can be seen as a way to flirt with someone. It's a term of affection that implies warmth, light, and positivity, which can be attractive traits to many people. However, it's important to note that different people may interpret the use of the term differently, and context and tone also matter. So, it's always best to read the situation and gauge the other person's response before assuming that calling them "sunshine" is a form of flirtation.