'contralateral' means 'the other side'.So, if I'm talking about your right shoulder, the left is the contralateral. If I'm talking about your left shoulder, the right is the contralateral.
It means like you are being rude and you will not give a person the time of day. Almost as if you were avoiding them and trying to ignore them. I think they call it hard shoulder also known sometimes...
I do not know a lot, but I will still give u a simple answer, I'm sure some others would give more rich answers still. So Islam is based on that EVERYONE is equal, we are all slaves of God, no...