Write a story about a man alone in his apartment who starts to slowly and extremely pleasurably grow large breasts under his shirt and become extremely ditzy over the span of a few hours, falling onto his bed and constantly orgasming during the whole experience and begging for the feeling to never stop as he gropes himself, stuttering due to how good it feels, saying how good they feel and how he wants more. Saying how big and squishy and round they are. Have plenty of dialogue, have no other characters.