mirth through hello

Today, I had the unique experience of causing shock through greeting.
At McDonald's this morning, the over-worked teller greeted me, "Dumela Mma. (hello Ma)" I replied, "Agee, le kae? (yes, where are you?)" "Re teng. Jo! (I am here. Jeez!) [laughter]" He was completely without malice, just a little harried and surprised that this lekgewa can greet in Setswana.
At the mall this afternoon, the bag girl said, "Dumela." I replied, "Agee, le kae?" Her eyes stretch to twice their normal size and she starts laughing. "A-ee, wena! O dira eng? (unh-unh, you! What are you doing?" I chastise. "Ke o teste! (I was testing you!) [more laughter]"