Nothing big there. We sometimes post here in swahili or sheng without much regard to whether a russian is reading. At such a close interpersonal level you should have informed them quickly. Nairobi is literally in the middle of kikuyuland. When i visit western/nyanza and someone speaks to me in luo or luhya, i don't rush to post here. Am a bit tired of this complaint 'someone spoke to me in kikuyu' nonesense, i think the complainers are more tribal, trying to say the kikuyus have a problem, because someone once in a while speaks to you in swahili without checking with you is no big deal. Grow up and use your head.
BTW what are these 'qualities' you have that make you look kikuyu? That is just an odd mentality you have there.
A New Kenya