Let me address your comment part by part:
Your body burns more calories in total regardless if you get out of bed, than hours and hours of working out. It takes calories to just run the body alone.
OK, that part is right and I have to agree with you. Unless you are a professional athlete, the amount of extra Calories you burn by going to the gym a few hours is negligible compared to the general amount necessary to just maintain bodily functions 24/7. Our society vastly overstate the weight loss that can be achieved by exercising. (General note for everyone: I'm not saying that you shouldn't exercise, exercising brings many many other health benefits and is linked to far greater life expectancy, it just won't make you lose weight).
Only sugars in the blood is turned to fat. No sugars no fat. Pretty simple.
That is technically partially right, but in fact wrong. It is true that only sugars (and glucose) can be "turned" into fat, but you ignore two facts:
1. Fats are not "turned" into fat because they are already fat. In fact, calories ingested as fats are the most easily stored.
2. Apart from fats, anything else with a high caloric content (most notable example are carbohydrates) is turned into sugars (or glucose), so by transitivity all those are also turned into fats.
If I ate 10K calories of just fiber and fat marbled steaks alone and stayed in bed all day, I would not get fat.
That is simply not true, if you ate 10K Calories you would get fat, regardless of the composition of such a diet (unless in extreme cases like a person having a serious disease making them unable to metabolize a specific molecule and then proceeding to eat only that molecule). You can get away with ingesting more calories than you need depending on the composition of those calories (protein rich like steaks, instead of spoons of refined sugar), but the effect is small, maybe hundreds of Cals, not 10K.
If I eat just 1000 calories of carrots and then a liter of zero calorie diet soda, I'd get fat.
If you ingest only 1000 Calories plus zero soda you will not get fat (although I can't guaranty you will not die of a heart condition due to all the sodium on the soda). As I said before, the body is not a moto-continuum, it doesn't create energy from nothing.
So although there is a very small possibility of not getting fat while ingesting a lot of calories, there is absolutely zero chance of magically getting fat while eating less calories than your daily expenditure, the laws of thermodynamics simply won't allow it.