Adapted from the Arabic binti, "daughter". Brought back by British servicemen who served in the Middle East during the First World War. It's come to be a derogatory term, NJ, so be careful referring to yourself that way. It implies that you have short heels.
I always wondered what was a'foot with all the guys from old AB.....but now I'll make dam sure I'll shoe them away if i "feel" their being derogatory :)p
Although it is insecure, pedantic and unseemly of you to correct the spelling or grammar of another person, I will pat you on the head and say thank you.