I'm too submissive in games and I dare not go for any KBs regardless of what role I am (Okay, I never played carry) just with the off-chance that someone nearby will get mad at me. Not a great way to get gold.
play sandking. stand at tower and hit W. get moneyz while being invisibru and therefore untouchable. (unless they have aoe)
or furion (nature prophet) and port to another lane as soon as something gets near you and push the heck out of everything.