Once alcohol enters the blood stream, it goes directly to the brain. The combination of the alcohol plus the hormones and chemicals in your brain creates illusions of altered sight, hearing, balance...
Alcohol dulls the central nervous system, including brain functions, so that it does not operate as efficiently as usual. That includes the ability to think, to make decisions, to coordinate, and to...
Isopropyl alcohol is a deadly poison to humans and most other living things. Do not drink it under any circumstances unless you want a very painful experience that you may or may not live to remember.