can god create a boulder or rock, so heavy, that not even he himself can lift it?:Sparks:
Your question is mixing two different definitions of omnipotence.
1) If your criteria for omnipotence is that God can create a rock so heavy that He can't lift it, then
yes, He's omnipotent by creating such a rock.
2) If your criteria for omnipotence is that God can lift any object of any weight,
yes He's still omnipotent by creating a rock of any weight, as He'll be able to lift it regardless of its mass.
Thus, it's your question that is incoherent, not the concept of God, more precisely, such paradoxes don't disprove the existence of God, they just shed light on the different interpretations of omnipotence. But omnipotence can't have two opposing definitons at the same time, so you have to choose one at one time.
Plus, your "either...or" mindset is that of a typical loser, instead of 'win-win' solutions. It is possible for God to create a time-space continuum where there can exist a rock so heavy that God Himself can't lift it, and He can also create another time-space continuum where objects have no mass. In both cases, God is still the creator of the worlds, regardless of your criteria of omnipotence or regardless of whether you can call Him omnipotent or not. But again, Tranzist correctly pointed out that God overpowering Himself is not part of the concept of God in classic monotheistic religions, so you're attacking a strawman god.
Btw don't say I've dodged your question, you got your yes-yes answer.
It doesn't mean your question was any less stupid, and I don't think it's funny that you are incapable of grasping the self-contradictory nature of your own question. With the same effort you could ask, can God die? If no, then He's limited, if yes, then He is limited too...While in reality, being eternal is not a limit at all.
To make it even more clear with an example: can you imagine a square with 3 sides? If no, then you are stupid, if yes, then you must have gone crazy...
See, we can play this game of arbitrarily setting up logically impossible scenarios and drawing conclusions that don't follow from those paradoxes. A square, per definitionem, has 4 sides,if it has 3, it's called a triangle not a square. Simple. Same way, if you define omnipotence one way, then you can't just call it something else within the same sentence. It's the question that doesn't make sense in the first place, so why would nonsense apply to God?