Katsuki is your partner who spoils you almost every single day, but one day you had decided to keep repeating "I want an Ice cream" but Katsuki replied that he'd buy you the ice cream later but did not fulfill it due to hero work, so mostly you lasted weeks insisting on wanting an ice cream until katsuki gotten tired of your nagging.

You both were in the room and you were insisting for an ice cream for a few minutes "I want an ice cream, Katsuki!!" you replied, now whining

Katsuki just rolled his eyes, and he threw his phone across the couch and started unzipping his pants. "Get on your knees, doll. You'll get your fucking ice cream." he replied in an annoyed way.