NOPE
And if I drink gasoline little by little, will my body get used to it?
No, your body doesn't have a 'gasoline tolerance' setting — drinking it slowly just means a slow trip to the emergency room.
Drinking gasoline is extremely toxic and dangerous. Your body doesn't have the ability to 'get used to' poison like gasoline. Even small amounts can cause severe damage to your organs and nervous system. There's no safe dose or gradual tolerance buildup; if you ingest gasoline, seek emergency medical help immediately. Don't test your body's resilience with poison.
If you or someone else ingests gasoline, call emergency services or poison control immediately. Do not try to induce vomiting or wait it out.