This sound is from Theon Greyjoy Soundboard - Game Of Thrones

Theon Greyjoy is a fictional character in the A Song of Ice and Fire series of fantasy novels by American author George R. R. Martin. Introduced in 1996's A Game of Thrones, Theon appeared in A Clash of Kings and A Dance with Dragons.
See also: Winterfell (Game of Thrones episode), List of Game of Thrones characters, List of Game of Thrones episodes, Home (Game of Thrones), Game of Thrones (season 2), Game of Thrones (season 6).