This sound is from Embarrassed Soundboard

Embarrassment or awkwardness is an emotional state that is associated with mild to severe levels of discomfort. It can have a profoundly negative impact on a person’s thoughts or behavior. Usually, some perception of loss of honor or dignity is involved, but the embarrassment level and type depends on the situation.
See also: Embarrass, Embarrassing Bodies, Everything Is Embarrassing, Embarrass River, Embarrassing cheque, and Embarrass, Minnesota.