Author's Note: 59/60. This is my headcannon that Mary and Sherlock have a beautiful friendship and I thought it would be funny if I made Sherlock have more common sense than John.
Pairing: Mary Watson x Sherlock Holmes x John Watson (Platonic)
Warnings: Extremely OOC.
Baby
"Sherlock Holmes, get your skinny ass in here immediately!" Mary screamed as she saw what her daughter was holding.
"What's wrong Mary?" Sherlock asked nonchalant, unsure of what he had done that he deserved to be screamed at.
Sherlock entered the room and saw a white faced, furious Mary glaring at John. "Please explain," she growled out, "to your idiotic best friend, why exactly it is not a good idea to throw a baby that has just eaten in the air."
Sherlock turned incredulous eyes at John who flustered. "Honestly, John, you're a doctor, you should know that babies will throw up immediately after they have eaten. Did you want her to choke?"
"But she was crying! Throwing her in the air always calms her down." John whined, and Sherlock and Mary looked at him as if he was an idiot.
"For God's sake." Sherlock muttered before marching up and grabbing the baby from John's arms.
"I am taking Rosa out, because John won't understand what he did wrong until you scream at him Mary. We will be back in an hour." Sherlock turned and headed towards the door.
"And no, I won't take her to any crime scenes, or the morgue, or a lab. I am taking her to the park." Sherlock added before Mary or John could.
"Seriously John, how is it that A FUCKING SELF-PROCLAIMED SOCIOPATH has better common sense than you?" A frustrated Mary exclaimed, loud enough for Sherlock to hear her.
"Your father is an idiot Rosa." Sherlock murmured, smiling at Rosa as she gurgled.
"Thank God you seem to be taking after your mother."