That would actually make for a really funny story. The MC is just sitting talking to his friends and says "man, my girlfriend is a bitch" and everyone's like woah don't be like that, I'm sure she isn't that bad, and then the next panel she walks into the room and she has dog ears and everything lol.
Bro is a wus, won't even tell her the reason why he doesn't want her licking him is because it's embarrassing. Also, she bought her own leash and collar, I guess she wants to go out for a walk XD