Guys, this guy I know walked past, did a finger gun and winked and made a noise with his mouth - ?

Is that a way to say hi, a way to flirt, or what?

He knows me and talks to me quite a bit - guess it's his way of being like "'sup" but not sure if flirty or not.

Just curious. He also gave me free coffee yesterday and checks me out - not sure which of his behavior is flirty and which is just friendly - or should I just assume it's all flirty?

and yes this is a serious question.
Guys, this guy I know walked past, did a finger gun and winked and made a noise with his mouth - ?
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