When a your friend goes on vacation and gives his/her house-keys to you, and you throw a party at their house which gets broken up by the police and causes over $5000 in damage. Can be done with or without an accomplice
Konrad: "Damn, you sure Sug'd that house pretty badly."
Annie: "Yeah, his parents want my family to pay $5000 for the damages. I knew I should never have given Caspar the extra key!"
SUG is used to define someone who is happily unemployed and infact "smug" at the thought that they have a very comfortable life whilst not working. Quite likely to grow food in the garden and keep chickens. Maybe claim to be self employed but never actually do any work, to "smug" to work.
Very possible that the partner works to support the household.