Men and Licking Lips, meaning?

Anonymous
So, I've recently been in Asia, Sri Lanka, and since I'm as pale as a white wall I surely stood out and everyone ended up looking at me as if I were a strange circus freak.

As this happened, men in street, my age and lot older were always licking their lips at me. It freaked me out and I found it really gross.

But, what is the meaning behind this guys? What were they hinting at? I think I have an idea but I want to hear from you.
Men and Licking Lips, meaning?
9 Opinion