irritation

why do small things sometimes irritate me so much? things like:

1. people who say "anywho" or "whatnot"
2. laziness
3. being sick
4. people who print out emails
5. nosepicking in public
6. inane phone conversations
7. this pink stuff that is all over my desk (WTF?)

maybe it is just the tylenol cold speaking...i am sick.