Split leather is leather created from the fibrous part of the hide left once the top-grain of the rawhide has been separated from the hide. During the splitting operation, the top-grain and drop split are separated. The drop split can be further split (thickness allowing) into a middle split and a flesh split.
Excruciating pain. It all depends where the bullet enters. A person shot in the brain will likely perceive no pain as the trauma usually renders them immediately unconscious. A bullet entering a limb such as a leg is initially perceived as a hot sting. Within 20 minutes a throbbing, pulsating pain is experienced.
This causes pain, nausea and muscle tightness in the chest -- hence the feeling that your heart is heavy, or those sharp pains when you see your crush with someone else. So essentially, your brain sends a message to a nerve. The nerve responds by making your muscles tighten in your chest. It feels like your heart is heavier, or that you're in pain, or both. When you stop being sad, your brain stops sending the message.