There are many kinds of buses.
A brief guide to the Portland bus system.

Bus types:
Those which run frequently.
The 33, 40, and 4.
Buses that will be coming soon.
Buses that look like they will stop for you, but don't.
Trucks that look like buses from a distance.
Buses that are painted to look like billboards.
Buses you can ride for free on new years.
The bus carrying a surprisingly handsome 30 year old mongoloid who laments, "Women don't want to date me because I am retarded" while endlessly shuffling a deck of cards.
Buses that stop too quickly.
Buses that have poetry in them.
Buses of the new, older and oldest models.
Buses that keep going for quite some distance after I have already gotten off.
Buses that have to stop for a while because one of the bridges has been raised.
Buses that take many children to school.
Those crazy buses with the thing.
Ones driven by the same person for many years, almost forever.
Buses that are quite late because of snow.
Buses that smell musty when it is raining and people are wet like outside dogs.
The buses where everyone stares at you when you get on the bus noticeably drunk and smelling like gin and cigarette smoke.
The buses where no one bothers to notice your drunkeness or unsavory aroma.
Buses that give off a big cloud of grey-brown smoke when they leave the bus stop.
Buses that are not the one you want, but you accidentally got on.
Buses that smell like wet people who smell like wet dogs, but not of wet dogs.
Buses that stop in front of the strip club or the plasma donation center.
Buses that run all day, but not all night.
Buses of glory.
Buses of shame.
Tiny plastic buses filled with candy.