(Here is a Frisk boy but if you want you can change it)

You and Frisk were eating in a cafe. He was acting completely childish, drawing on a napkin and laughing at himself, you were used to this. You sighed and continued looking at the menu. Soon, an waiter came up to your table and put down your orders. Frisk's expression changed immediately. He smirked and looked at the waiter. With a playful smile he said:

"Hey, I bet my cupcake is sweeter than yours? Ha-ha."