It's actually one of the main theological questions of christianity, pretty much everyone's view on it is a bit different.
There's a wikipedia article for this type of thing :
http://en.wikipedia.org/wiki/Omnipotence_paradox
Quoting wiki :
I personally thought that was kind of a lame sidestepping of it, but it was the fallback for a few hundred years of catholicism |
Essentially its like asking God to make a square that is a circle. Categorically, a square and a circle cannot exist as the same thing because of their definitions of what constitutes a square and what constitutes a circle.
A burrito that is bound by physical limitations in regards to how much it can be heated up, cannot be heated up to a measure which exceeds physical limitations. God's inability to create such a burrito isn't evidence to His lack of power, but instead shows that the idea is incoherent to begin with.