Malawi -- (emailed from a reader): Among the Ngoni-Tumbuka people of Northern Malawi, one greets by either shaking hands and saying: " Mwauka uli?" Literally: How did you wake up? The positive response is: "tauka makora" Literally: "We woke up well" (we is used as respect not numbers).
This can be accompanied by a handshake where the greeter's right hand shakes the other person's right hand but to show respect, the greeter would support the right hand on the list with the left hand, as if the right hand is too heavy to stand on its own in the handshake. if the person one is greeting is more respected, the greeter might ask "Mwauka uli?" while kneeling or tilting the knees a bit (if the greeter is a female) but if male, he might show a slight bow of his upper body.