when the cleaning uncle yells at me for having too many
cigarettes butts under my feet? 
it really depends on how you feel on the day , who you are waiting
for and where you are waiting?
on a bad day, you can easily be frustrated when your best friend is
late for 5 minutes.
to make that worse, you probably do the waiting at a bus stop, in
the middle of nowhere, without any reading material.
to prevent that from happening, try telling your friend(s) that
last person foot the dinner tab. it works at times. 