Seens it

When you already seen something.

a term originating from Jamaica that shows understanding....that one has "seen" what you just said.

Or is just as often used as a question (instead of "know what I'm saying?" or "know what I mean?")

to mean to understand something

Reading acknowledgement on facebook chat.

When the person you're talking to click on your name and hypotheoretically read the message you sent her, a small logo "Seen" appears under your words.

It has been the reason of a few breakups, suicides and uninvited sexual intercourses.

to acknowledge something.

When you're trying to talk to someone on facebook but they view your message and don't respond.

it is a response you give when someone tells you something. it means i see or yeh i understand.