Argent Squire

He needs a couple of coconuts hanging from the backpack.

1st soldier with a keen interest in birds: What? Ridden on a horse?
King Arthur: Yes!
1st soldier with a keen interest in birds: You're using coconuts!
King Arthur: What?
1st soldier with a keen interest in birds: You've got two empty halves of coconut and you're bangin' 'em together.
King Arthur: So? We have ridden since the snows of winter covered this land, through the kingdom of Mercia, through...
1st soldier with a keen interest in birds: Where'd you get the coconuts?
King Arthur: We found them.
1st soldier with a keen interest in birds: Found them? In Mercia? The coconut's tropical!

Copied from IMDB

If you are one of the few who didn't get his joke, check out Monty Python and the Holy Grail

This is one of many pets being added for the Argent Tournament event in patch 3.1.

Here is a list of all of the pets available to Horde through this event:

• Tirisfal Batling (Undead): 40 Champion's Seals
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• Durotar Scorpion (Orc): 40 Champion's Seals
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• Mulgore Hatchling (Tauren): 40 Champion's Seals
• 
  
• Sen'jin Fetish (Trolls): 40 Champion's Seals
• 
  
• Enchanted Broom (Blood Elf): 40 Champion's Seals
• 
  
• Argent Gruntling: Complete the dailies to become a Champion of the Argent Tournament
• 
  

Here is a list of all of the pets available to Alliance through this event:

• Teldrassil Sproutling (Night Elf): 40 Champion's Seals
• 
  
• Dun Morogh Cub (Dwarf): 40 Champion's Seals
• 
  
• Elwynn Lamb (Human): 40 Champion's Seals
• 
  
• Mechanopeep (Gnome): 40 Champion's Seals
• 
  
• Ammen Vale Lashling (Draenei): 40 Champion's Seals
• 
  
• Argent Squire: Complete the dailies to become a Champion of the Argent Tournament
• 
  
  

Note that pets purchased with Champion's Seals are not BOP.