So unfortunately the Prank War episode is still not on demand but I have seen this person on tumblr post blurry pictures of Unifrown moments from the episode so why not this screenshot.

So even though this is a prank because she said she's going to prank him by giving him a "Chocolate" cake but it's actually strawberry. Yes it's a prank but she still baked a cake for him and that's so adorable. "Even though Master Frown is a jerk all the time I still love him and want to marry him." XD.