bend the other cheek over

Much like "turning the other cheek", except you are getting fucked in the ass by a "friend" instead of merely backhanded.

"Auntie Jr. is a jerk, Mom ... I'm not gonna bend the other cheek over this time!"
When a "good Christian person" and their charity has become nothing more than a target and/or a mark; said "good Christian person" often tires of bending the other cheek over.