sucked off old guy

MY wifes mother has a partner who is seventy and it is a bit of a joke that he keeps looking at my wifes tits so she puts on low cut blouses. On Saturday he disappeared off into his bedroom and after a while my wife disapeared.When I went looking for them I could hear him moaning and I saw my wife pulling his big fat veiny old cock. She smiled at me and beckoned me over. She told me to kneel down and pushed his cock against my lips. I started to suck and she lay on the bed and masturbated. He came all over my face and my wife had multiple orgasms with us both fingering her up the arse and fanny.