This week's phrase is "I get it!"
We use it to show we understand some new information or explanation. It can also be used in the negative form when you don't understand.
A: "Just add 10% to your bill, and that's the tip.
B: "Ah, I get it!"
A: "Why did the chicken cross the road? ... to get to the other side!"
B: "Sorry, I don't get it..."
I get it とは、「分かった！」とか、「なるほど」という意味です。説明を聞いたときや、新しい知識を得た時に使います。