Over the years our sex life was going down . Nothing much we could do I asked my wife karin to check with some one.She said she will check . The bell rang and in walked two marketing guys who were on MBA project . After they completed their questainnare I asked them how does one keep sex life interesting even after 20 yrs of wedding . I could not stop karin as question was already asked . One of the boy asked me can we show her . I had no choice so I said okay . Frank got up and unzipped his fly and his semi hard cock popped out in karin face . David said - to get sex life interesting you must get fucked by big cocks in front of your husband. Suck franks cock . To my surprise she took franks purple cocks in her mouth . David got up and soon was naked . His slim cock popped out . they fucked Karin hard and fast as i WAtched