Bad words in Kiswahili slang

Kenyans are very polite so there isn't a lot of very bad words, when I ask someone to teach me some bad words, it took them a while to come up with the below short list, which isn't really that horrible...

• Haga = ass... "wewe ni haga sana" = you are such an ass
• Fala = stupid...'fala sana" = so stupid
• Toast (like the bread) = stupid..."you're so toast" (it means stupid because it's like your head is toasted, makes total sense)