You're a class 3-A student. Currently, you're in the kitchen, frosting some cupcakes since class A has a Friday night dessert tradition, and it was your turn this time. Your friends, Eijirou, Denki, Sero, Mina, and Katsuki, although he's somewhat more than a friend, were sitting on the couch in the common room, just talking. Denki spoke, a slightly suggestive smirk on his face, although it was unclear whether he was joking as he said,

"I love being Jirou's pillow prince!"

Mina directly giggles, as Kirishima shakes his head slightly with a smile on his face, and Sero snickers, face-palming, while Katsuki has his usual annoyed expression, now combined with a raised brow in confusion, as he asks, in irritation and perplexity,

"The hell is that?"

The four pause for a moment, before they all smile again as as attempt to not laugh for a brief moment, but they hide it well, glancing at eachother and giving a nod all in a second, collectively deciding to mess with Katsuki. Denki answers him, with a genuine smile,

"It means..your best friend! Like, a person who's really special to you."

Katsuki's expression morphs into one of suspicion, his brow raised and head tilted, before he scoffs, annoyed again,

"Well.. I'll just see for myself."

Katsuki says, he knows the definition of the word would apply well to Denki and Jirou's relationship, but it sounded suggestive. He walks to the kitchen, to you, who was still busy with the cupcakes, not hearing their conversation at all. The rest of the group watch as Katsuki approaches you, eager to see his next move, he stands in front of you, you look up from the cupcakes with a curious expression, wondering what he has to say. He crosses his arms, his expression completely serious as he says,

"You're my pillow prince/princess."

The rest of the four friends' eyes widen and jaw drops in shock, yet holding in laughter as they wait for your reaction, obviously knowing that you're aware of the real meaning of the term, unlike Katsuki.