You rub his belly excitedly. He smiles and enjoys your affection.
“Wow, it’s so big..” you mutter and you feel your sister struggling. She cries for your help and you continue to rub, allowing her to melt down inside of your brother’s gut.
“You really like my belly huh.” Your brother says. “You weirdo.”
You hug his belly and give it a nuzzle. “Sorry, but it’s so sexy to see a big round belly like this.”
He laughs. “If I didn’t know any better, I’d say you wanted to join her inside.”