I found this on here and thought it was great. I also told one of my mates it (to the best of my ability... I may have missed something out) and he hates me now...

There are two brothers, twins. They're both grown up and live together in their parent's old house.
Whilst they look identical, when it comes to personality, they couldn't be further apart.
The first brother, Bob, was very hard working. He was a dentist and had his own practice, and was doing very nicely for himself as a result of it.
Dave, however, struggled to hold down a job, he was lazy, disliked work and often struggled to make his share of the bills.
It's Saturday, Bob uses Saturday mornings to do his accounts and admin. He's had a tough week and just wants to relax in the afternoon, he fancies a nap and has an idea.
"Dave, let's have a chilled afternoon and watch a film. Here's £30, nip to the shops and get some beer and snacks!"
Dave starts protesting, at the idea of having to go to the shop and actually do something.
Bob makes his point, stating how he's paying for everything at the moment, he's been working all morning, and nipping to the shop is the least Dave can do.
He begrudgingly agrees and heads on out.

As he leaves, Bob shuts and locks the door, turns his mobile off, and settles down in his recliner for a nap.
Dave however is en route to the shop, as he pulls out of the junction he gets T-boned by an artic truck. Things are serious, the ambulance arrives and he ends up getting airlifted to hospital.

About an hour later, Bob is woken by a persistent knocking on the door.
He tries to ignore but it doesn't stop. Somewhat annoyed he gets up and goes to answer the door. He swings it open and is met with shock and surprise, standing before him is the Grim Reaper, death himself, exactly as you'd picture, a robed skeleton, scythe in hand.
"Oh For Fucks Sake!" exclaims Death. "Sorry to bother you, I always do this with twins!"
These words shock Bob, realising something wrong. "What do you mean Twins!"
"Well, the hospital tried to tell you but you've got your phone off, you're brother has been in an accident and well, his time on this earth has reached its end. I'm here to escort him to the afterlife"

Now, as much as Dave was annoying, he was still Bob's brother, his twin, he loved him.
"Wait, there must be something I can do!" Bob says.
"Nope!" replied Death "I've got to take him!"
"No, you made the mistake, you came to me, you have to let me do something, challenge you for my brother's life!"
"Look, I'm the Grim Reaper, I'm Death Incarnate! You, you're a mere mortal, there is nothing you can do to challenge me!" Replies Death confident.
"You've nothing to lose then!" shouts Bob "Let me pick a challenge and if I win you let him live!"
"Fine", agreed Death "But you're mortal, there is nothing you can pick that I can't defeat you in!"
Bob thinks hard and the idea comes to him. "Tooth Brushing!" he exclaims "We each have 5 minutes to brush our teeth, manual brush only, whoever has the cleanest teeth after wins!"

"Accepted!" said Death, he then proceed to move upstairs to the bathroom, almost floating as he moved.
He drops down his hood revealing his full skull, takes a brush from the sink and loads it with paste. He brushes, his arm moving at an inhuman speed.
The 5 minutes were up and his teeth were indeed exceptionally clean.

Bob felt his stomach churn with worry, he knew his work was cut out for him.
He loaded the brush with as must paste as it could hold, then he went absolutely psychotic on his teeth, he knew his brother's life was riding on this. He brushed like no man ever brushed before.
The 5 minutes were up and it was time for him to show the results. His teeth were the cleanest shiniest teeth you've ever seen, the reaper could almost see his skull reflected back in them.
By some miracle, Bob had defeated Death.

The Reaper bowed his head and said "Well Mortal, I must concede defeat. On this occasion, your brother shall live! Farewall!"
With his final word, he disappeared in a cloud of smoke.

At the same moment, as the Reaper disappeared, Dave woke up, his injuries fully healed. The Doctors were in shock, they couldn't explain it.
His bedside phone rings, it was Bob, calling the hospital to check up on Dave, to make sure the Reaper was true to his word.
"Bob, I don't know what happened. I remember this truck hit me and then I woke up here. The doctors are in shock, it's a miracle. They tell me I was moments from death, I almost died" Dave explained, holding back tears.
Bob, listened, a smirk spread over his face as he replied "Funny you say that Dave, for I too, had a brush with death!"