What Does It Mean When Someone Tickles Your Palm With Their Finger During A Handshake?

Maryanna19918491
Okay so I have kinda a crush on this guy but I'm not sure what the deal is. I don't think he thinks of me in any way he has tons of female friends so I don't really think anything of it if he's being nice or something but he was about to high five me and I shaked his hand instead and then he used the middle finger to tickle my hand? I looked at him like what is wrong with you and laughed and my friend was next to me wondering what happened and he did it to her hand. Is this supposed to mean something?
What Does It Mean When Someone Tickles Your Palm With Their Finger During A Handshake?
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