I like this game

I like Rarity and Twilight in this one. Rarity trying not to laugh at Dash, and Twilight’s “Oh, Applejack…” expression are easily the best parts of the whole image for me.

Drinking so much alcoholic apple cider would be surely lethal for both ponies, so Twilight Sparkle made a potion that would slow down drastically the digestion and absorption of the cider.  
The beberage saved both ponies from suffering alcohol poisoning but there were some unexpected secondary effects:  
The first one and most prominent was the bloated bellies of the contestans that, unable to digest and absorv the cider at a normal pace, became unable of getting rid of their new gained weight until the effects of the potion wore off.  
The other effect was the intoxication caused by the cider alchohol. Even with the effect of the potion, the alcohol was still easier to absorv than the cider itself, causing a weak but constant drunkenness that made the contestants unable to inhibit themselves the time they were still bloated by the cider, leading to akward and interesting situations, like the time Rainbow Dash tried to hoard the Wonderbolts after they performance in Canterlot, forgetting how big was her body, or Applejack offering herself to teach Spike some dance lessons in order to impress Rarity. Her still bloated belly made it a hardly forgettable situation for Spike due to it akwardness. He’s not sure if it was a so terrible time as it sounds.  
Twilight Sparkle is still wondering why she used so many Redstone Dust in making these potions.

The drinking contest was then proceeded by a tummy rubbin contest.

Pissing contest.  
Somebody alert Starly

Meet back in 2 hours for a pissing contest.

Fatty.
 
Adopted Fatty.
 
Fatty Fatty No-Parents.

They then promptly died of alcohol poisoning.