I was reading an article @ www.rzim.org, and came across this:
Contrary to what many believe, Jesus words about turning the other cheek after someone hits you on the right cheek are dealing with personal insults, not with acts of violence or force. Rather, Jesus said, When insulted, be willing to take another insult. Assuming that persons in Jesus time were generally right-handed, a hit on the right cheek is a back-handed slap, which even today in the Middle East expresses a gross insult. This idea of a slap as an insult is seen in Lamentations 3:30: Let him give his cheek to the smiter and be filled with insults. This slap would be roughly equivalent to spitting in someone's face in our society.