This sound is from Hank Hill Sounds: King of the Hill - Season 1

Hank Rutherford Hill is the main protagonist of the Fox animated television series King of the Hill. The Economist described him as one of the wisest people on television.
See also: King of the Hill (season 1), Bobby Hill (King of the Hill), King of the Hill (season 8), List of King of the Hill characters, List of King of the Hill episodes, King of the Hill (season 13).