1 - People who chew with their mouths open - making disgusting smacking noises...yeuch!
2 - Poor spelling esp in formal communications or job applications ("I would like to pursue a carrier"....WTF? Go chase a A O Bayusuf truck!) - typos and some malapropisms I can live with since to err is human - but to fail to edit/review is foolish.
3 - Badly behaved kids who throw tantrums in public places. nkt! whereTF is my belt!
4 - Impatient motorists who prompt you to enter an intersection when you should be using your own judgement - "Motha F---er, here are the keys, would you like to come and drive me?"
5 - People whose answer to the greeting "Good Morning/Afternoon", is "to you" - WTF?
6 - Using the word "severally" - it exists as much as unicorns do.
7 - People who cannot hold a formal/official conversation in either English or Kiswahili - however simple or however shallow the vocabulary - but slip in Sheng/English/Engsh/Kiswahili words any which way they can.
8 - Motorists who think the commute to work is the grand prix and that you earn points for staying ahead by accelerating when being overtaken - what ultramegawankers!
9 - Matatu Drivers who obstruct traffic - this merits a three volume book
10 - Churches that are money minded (they sell calendars, they allow Sasini to do promotions after mass, they allow gospel singers to perform in church, then tout their CDs, etc)
OK - I think I am a highly irascible person...