Repeat after me:
E T H I C S
Ethics
Ethics
Ethics
Ethics
Ethics
Ethics
Ethics
Ethics
Ethics
Ethics
Ethics
Ethics
Ethics
Ethics
It's something like ebay. Once you started submitting your bid, you are already bound by a contract. Similarly, when you make a deal to your fellow softie, you "bind" (quote and quote) yourself with this unwritten contract. It's your obligation to fullfill that deal.