義理の妹は彼女が彼女の妹よりも良いお尻を持っているかどうか私に尋ねます、そして彼女は私が彼女をよりよく見て彼女とセックスすることができるように私のために踊ります

My sister-in-law is always competitive with my wife, but this time she has reached the extreme that she asks me which ass is better, hers or her sister's, and to show that hers is better, she shakes it and lets me fuck her so I know that her ass is the best