If and when you see a cute girl or guy. You dont know her that well, in fact you dont know her at all. You might know the place of which your no name cutie works at since that's where you met her. After a week maybe even a few weeks you decide to ask her out. She says yes. As soon as you know it your out on your first date with this girl you are basically strangers with.
You might like her, she might like you. So you try flirting with her, not with words, but with your hands tickling her.
You might be thinking physical touch is my love language so it's okay to be showing this affection.
Reality check, this is a stranger you know two things about, her place of work, and her first name. Your not even friends yet and your putting your hands on her tickling her. Now unless she's into it then It's fine.
But if she is moving away trying to avoid you the whole time so you won't tickle her probably a sign she dosent appreciate you putting your hands all over her. In fact if you dont take a hint, guarantee there will not be a second date in your future.