Also the ever brilliant 'octopi' rather than the correct 'octopuses'.

Or the facetious, though "correct" in Greek octopodes.

So would you say then that we have no gendered grammer or just neuter grammer if gendered at all?

I would say that English does not have grammatical gender for nouns and adjectives, but some seem to think it has remnants of gender in its pronominal system. One of the big things about grammatical gender in language systems is that gender usually gets marked in more than one word. For example, in Latin, puer Romanus 'Roman boy' and pouella Graeca 'Greek girl', the adjectives agree in gender, number, and case with the nouns the qualify.

Ceci n'est pas un seing.