The "living in sin" part refers to the christian belif that sex out of wedlock, drinking and cursing,(the lifestyle portrayed on the show) is immoral. The "safetypin" refers to the financialy unraveled group, having to be held together with the minimum amount monetary resources.
John's lifestyle consists of women and drinking, and the finances to support neither; just living in sin with a safety pin.
by LAWRENCE PETERS February 19, 2008
Get the Living in sin with a safety pin mug.