Crashin' Thrashin' Flyer

Just open [item=104319] under the Christmas tree and find [item=104318].
Starting on December 25, 2013.

Previous gifts:

• 
  
• 2012: They're Both Footballs? - [item=90883] & [item=90888]
• 
  
• 2011: Gaudy Winter Veil Sweater - [item=70923]
• 
  
• 2010: MiniZep Controller - [item=46709]
• 
  
• 2009: Red Rider Air Rifle - [item=46725]
• 
  
• 2008: Crashin' Thrashin' Racer - [item=37710]
• 
  
• 2007: Clockwork Rocket Bot - [item=34425]
• 
  

There are two reasons for why you are being stunned:

1. 
   
2. Another player has shot down your flyer.
3. 
   
4. Your flyer goes too far away from your character.
5. 
   

Please keep the second thing in mind since it can confuse you. Otherwise you might think you're constantly getting shot down. It does take a few shots before a flyer is shot down.

On December 25, 2013...
[object=187236] offered
A Winter Veil Gift, which earned
Crashin' Thrashin' Flyer (this achievement), and rewarded
[item=104319], which contained
[item=104318], the 2013 gift, which was necessary to fly in to
The Danger Zone.