My girlfriend doesn't like that I have hair on my dick and just one day before our anniversary I hurt my arm, so I can't shave it myself. My girlfriend wants to cancel the date, and my sister-in-law hears me arguing with my girlfriend. My sister-in-law is a Latina woman, who I always found attractive, but being my brother's wife, I never thought anything sexual with her. Upon hearing my problem, she offers to help me without taking a "No" for an answer. While she shaves my cock I can't control my erection, and my sister-in-law jerks me off slyly, until she puts my cock in her mouth. Already very horny, we fuck intensely... It's all my girlfriend's fault, she's so fussy!