I take a few days off, and there's a funny multi-page post. No fair!
But I suppose it is easy enough to call Keisha a man in one of the following examples.
1. Keisha is a member of the Race of Man, also known as Humans, also known as Earthlings. In the Sci-Fi context, she is a female Man.
2. Since she rocks so much, let's use gender inappropriate slang terms! Keisha's Da Man!
3. Keisha runs her own web space; she's her own boss! In a business context, she's The Man.
Just glad no one's asking me for proof of gender... my naughty bits are camera shy.