I was in Shanghai on a business trip several weeks ago. One evening, while my coworker and I were walking down Nanjing Road on the way back to our hotel, we were accosted my many ladies of the night offering their services.
Not having any interest in whatever devilry might await us should we accept their offer, we simply said "No" repeatedly in English, but that didn't seem to get the point across very well.
Later, my coworker asked our translator about the encounters, and how he could say "Go away!" or "Leave!" in Chinese. Our translator told him, with a slight smile, that he could use a word that phonetically sounds like "gwen". When asked what it meant, he said simply, "Fuck off!".
What would this Chinese word actually be (what is the hanzi in Simplified Chinese)? And is the meaning as strong as our translator suggests?