To not understand the biscuit thing?

[IWannaBeAPopstar]

I feel like I'm missing something important. What is this and why is it used? I've seen some posters say it's the first time they've "given" it to someone? I feel like I should be able to figure it out but I'm lost.

[oohlalala]

Oh wow, I always thought it was an offering of a biscuit to calm down lol!