Welcome to this 221B birthday gift for my very special and wonderful daughter SecretMoustache2. Happy birthday honey!
Special thanks to MapleleafCameo for reading this through for me :D
Disclaimer: Don't own, don't profit, just borrow and play :D

They were Greg's exact words. "Nothing could go wrong." John remembered it exactly, he recalled the precise moment he realised that the Detective Inspector couldn't have been more wrong.

It wasn't when, five minutes after the door had closed behind the older man that John realised that they had been tricked into agreeing to look after it; after all, Anderson was far more likely to damage it (who would trust such a precious item to Anderson?)

And it wasn't when the doctor realised that, though they had many weird, wonderful and (more to the point) unusual things in the flat, they certainly didn't have the necessary equipment to take care of it.

It wasn't even when he was forced to admit that he, and not Sherlock, would have to go to the shop to acquire the items that they would need.

It was when he returned home to find Sherlock staring down at it as it lay on the table, liquid dripping from his curly hair.

"What happened?" he sighed.

"It smelled odd John, and was making a horrible noise," Sherlock replied in a small, perplexed voice, "so I unwrapped it, and it leaked on me!"

Yes, it was then that John realised just what could go wrong when you leave Sherlock in charge of a six month old baby boy!