If someone says "you can't do that" there's a colloquial response of "can too". Is it "can too" or "can to"?
closed as general reference by tchrist, Matt E. Эллен♦, MετάEd, Kristina Lopez, onomatomaniak May 14 '13 at 18:54
This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information. If this question can be reworded to fit the rules in the help center, please edit the question.
The appropriate phrase would be 'can too'. This one I'm going to have to go on process of elimination because 'can to' doesn't make any grammatical sense, be it colloquial or otherwise.
One would think that the use of 'too' in that phrase came from one of its meanings:
But we're not exactly expressing one's ability to do something 'as well'. Rather, we're negating the previous person's assertion that we cannot do it. Regardless, the answer is 'can too'.