Pausing in the middle of dancing with cousins to talk to an uncle will lead to a secret threesome

A cousin invades the brother and his spouse dancing the traditional wedding waltz, and out of nowhere, has a three-some sex with the father-in-law. The bride’s cousin asks, she wants something about her hidden as well. He seduces her and they make love so intensively that even a vetriloquist doll would beg to differ.