How does a TBH work?

[WhiteNoise]

I know this is an insane question for a 13 year old with internet to be asking, but I just recently got an Instagram, and people have been posting pictures with "TBH" on it. I know it means "To be honest" but I'm not sure how it works. And how do I post one? Can someone explain in detail? Thanks a bunch!

Updates

+1 y

How does it work on Instagram? Do I have to tag them in a pic or send them a message?

[tiderolling_xoxo]

You Just Tell someone what you honestly think of them

[CherryCoke89]

Yup. You're just basically telling them what you think. You can do it on their picture, or through messages, it doesn't matter. I would personally prefer it through a message because that sort of thing should be privo. imo, but, you can do whatever you want