This is the first in a series of oneshots/drabbles/etc. I am willing to take requests, so if you have suggestions let me know. Most of these I have found on Pinterest, so if you've made them don't be upset, I'm just writing out your scenario.

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Lestrade tapped his foot against the floor, "What is taking you so long?"

"He's finding one of his jumpers," Sherlock replied snidely, crossing his arms over his chest, "We do not have all night, John!"

A muffled thump was heard, and John came stumbling into the main room of the flat rubbing his head. Lestrade felt his eyebrows rise as he heard the amount of swearing coming from the ex-soldier. John pulled on a shoe, and tugged the jumper in his arms over his head. He straightened, cursed again, and dug a handful of change out of his pocket.

Sherlock smirked, and pointed to one of two clear jars that was resting on the mantle above the fireplace. John rolled his eyes, opened the jar, and emptied the handful of change in the half full jar. Lestrade looked at Sherlock, then at John, "What was that?"

John looked up, and finally noticed, "Sorry, I was in the middle of having a shower when you called."

Sherlock rolled his eyes, "It's his swear jar. John has quite the vocabulary."

"You have one too!" John piped up from behind the detective and consulting detective as they made their way down the stairs.

Lestrade felt his eyebrows disappear into his hairline, "The great Sherlock Holmes has a swear jar?"

Sherlock cast an annoyed look over his shoulder at John, who smirked, "It is not a swear jar, it is-"

"It's a rude jar. Every time he makes a nasty deduction about someone, he needs to put a pound into the jar."

"What happens when they're full?"

John smiled, "We take Mrs. Hudson out for dinner."

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Disclaimer: I don't own Sherlock.

Headcanon:

John, as an army an, has quite the vocabulary. Sherlock never swears and 221B has gained a 'Swear Jar' just for John. John retaliated with a 'Rude Jar' that Sherlock must add to every time he makes a rude deduction. When the jars fill, they take Mrs. Hudson out to dinner.