The Mane 6 and Spike were having a party at Sugarcube Corner hosted by Pinkie Pie. There was cake and all kinds of entertainment. Spike drank the punch, and passed out because it was spiked.
After Twilight placed Spike into his bed, they played Pin the Tail on the Pony, which Applejack won.
"That gives me an idea for a new game we could play," said Applejack. "How bout the Tail Bitin' Game?"
"How does that work exactly?" said Rainbow Dash.
"It comes in two rounds. First, one of us is 'it'. The other five ponies each write down whose tail they think that pony is gonna bite. Then they stand facin' the fall, and that pony chooses one tail to bite. Whoever guessed right gets a point."
"Ooh, sounds like fun!" said Pinkie Pie.
"Then, after each pony has gone once, each pony will have another pony bite her tail. After which, she has to guess who it was that bit her tail. If she guesses right, she gets another point. Whoever has the highest score wins."
"I'll keep track of the score," said Twilight. She set up a chalkboard to keep score on, while Pinkie supplied them each with small pieces of paper (like votes on Survivor) and a pen.
"Ah go first," said Applejack.
The other five immediately scribbled a name on their paper, then faced the wall.
Without a moment's hesitation, Applejack bit Rainbow Dash's tail and pulled her back a little.
"Of course we all saw that coming!" said Rainbow Dash.
All five ponies voted for Rainbow Dash.
"Is it that obvious that I really like to bite her tail?" said Applejack.
"Are you kidding?" said Twilight.
"I'll go next," said Rainbow.
The ponies each wrote a name down while Rainbow tried to decide whose tail to bite.
Eventually Rainbow's teeth closed around the tail resembling cotton candy.
Pinkie Pie giggled. "I knew you wouldn't be able to resist my tail!"
Pinkie voted for herself. Applejack had also voted for herself, and Rarity and Fluttershy had voted for her. Twilight voted for Pinkie, so she added another point on the scoreboard for herself and Pinkie, who were in the lead.
"Ah thought for sure you'd wanna bite my tail, coz I'm always doin' it to you," said Applejack. Obviously Rarity and Fluttershy had the same idea.
"Since I haven't gone yet, it's my turn to have some fun!" said Pinkie.
The ponies each wrote a name down, then faced the wall.
Almost immediately after, Pinkie bit Rainbow Dash's tail and pulled on it. "I can see why Applejack loves this so much," said Pinkie through Rainbow's tail. "Your tail tastes like skittles!"
"That's an improvement over the rainbows at Cloudsdale," said Rainbow Dash.
Rainbow and Applejack guessed right, so they got extra points. Twilight and Fluttershy voted for Fluttershy, and Rarity voted for Applejack.
"Right now I'm in the lead along with Rainbow Dash and Pinkie Pie," said Twilight. "Everyone else has one point. And since Rainbow already had her turn, I guess I'll go. I haven't bitten a tail in so long though."
The ponies wrote down a name and faced the wall. Twilight took a while to decide. Applejack or Rainbow Dash? Fluttershy or Rarity? Pinkie Pie?
Twilight finally made her decision and bit the tail she had chosen.
"Ah didn't expect you to pick mah tail," said Applejack.
Only Fluttershy had guessed Applejack by chance. Rainbow Dash and Applejack had guessed Pinkie Pie, Pinkie Pie had guessed Rainbow Dash, and Rarity had guessed herself.
"Because Applejack's already had her turn, and you guessed right, it's your turn Fluttershy!" said Twilight.
"Oh my, it's such a tough choice," said Fluttershy.
The ponies wrote the names down and faced the wall.
It took about a minute, but eventually Fluttershy bit Twilight's tail.
"Why didn't anyone want to bite my tail?" said Rarity.
Rarity and Applejack had voted for Rarity. Rainbow Dash had voted for herself, and Twilight and Pinkie Pie had voted for Pinkie. So, no one won this round.
"I believe it's my turn," said Rarity.
After the ponies wrote the names down and faced the wall, the ponies waited for a while.
Then, Rarity bit Applejack's tail.
"Ah knew you'd do that," said Applejack. She had voted for herself.
Rainbow Dash had also voted for Applejack. Twilight, Fluttershy, and Pinkie had voted for Fluttershy.
"So, as of Round 1, Rainbow Dash is winning at 3!" said Twilight. "Then Fluttershy, Applejack, Pinkie Pie, and I are in second with 2 points each, and Rarity's in last with 1."
"Now, the second round begins!" said Applejack.