*what would i call a person who easily gets offended and does something back? i would call that a person who's overreacting.*I would call that person touchy and vengeful.
Butthurt; aka you use it against someone who gets offended easily.
short-fused. My wife.
Sucker
You can call that person resilient, strong, or a survivor.
a frail person... or someone who stands for nothing
zinky
mercenary
The person who gets annoyed so easily like a child.
If the partner you are with becomes easily "offended" by you trying to understand their actions...probably not a good sign. We all have narcissistic defenses which prevent us from squarely confronting the full truth about ourselves and our actions. But if the denial is all-encompassing, persistent, and aggressive, you may be on to something.
A person who gets coal from under the ground is typically called a coal miner.
That the person gets angry very easily.