So this is just a cute little fic that I couldn't help but write there will be 10 parts. There is no pairing.

Reason 1

Sam and Dean Winchester were staying with there 'uncle' Bobby Singer. And to tell you the truth he was beginning to regret letting them stay.

Flashback

"Bobby its me John."

"What do you want boy i'm in the middle of a salt and burn"
"I need you to take the boys for a few days, maybe a week I have this case, Changelings in Illinois, I can't risk my boys getting hurt."

"I will be home ny midight, drop the boys off then."

"Okay Bobby thanks."

Oh how easier it could have been to say no, but Bobby Singer could never say no to the chance to look after his surrogate sons. However now, now he was regretting that descion.

"Sam can-"

"MOOOO!"

"Sam I said-"

"MOOOO!"

"SAM-"

"MOOOO!"

"Dean-"

"MOOOO!"

"Dean-"
"MOOOO!"

"Will you to idjits stop fooling around."

Sam and Dean shared a look, smirks on both children's faces.

Later that night as they pair they on their beds in the guest room sam whispered to Dean "How long are we going to Moo every time Bobby says are names for?"

"Until he snaps." Replied Dean.

"Goodnight De."

"Goodnight Sammy."