ruby's little brother with the fat head

Three nights ago, I dreamt that I went swimming with Ruby and her mom, Mary-Jane. Mary-Jane was pregnant and Ruby was really excited about it. Then, all of a sudden, Ruby's mom also had a two or three year old boy. He was clinging onto Mary-Jane for dear life, even though he was wearing striped water wings. Ruby told me he couldn't swim because his head was so big that it would weigh him down, and he'd sink and drown.