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I consider myself to be fully bilingual. My mother tongue is Afrikaans and I went to Afrikaans schools, but I learned English as a toddler and was a fluent speaker by the time I went to school. I read my first (abridged) Dickens at age 10. My degree was presented only in English. My husband and I speak mostly English to each other, although I speak Afrikaans to my children. When I speak, read or write English I think in English. I more often have to translate words from English to Afrikaans than the other way around. Can I claim English to be my first language?