I think curling the lip is very threatening, and dogs do it too.
Africans often put both hands on their heads when shocked or very distressed. I've seen that elsewhere of course, but it's much more common in Africa, accompanied by a shrill wail.
I also love to see/hear African ladies 'sucking their teeth' in disapproval. It can be very loud, but in spite of many lessons from my in-laws, I've never managed to do it like them. Men there don't do this.
There seem to be quite a few gestures reserved for one sex or the other.