
Devise ways of getting to the front of the bus without touching the floor. Next try them out.
say loudly, "has anyone seen my pet tarantula"
take a small water pistol filled with warm orange squash onto the bus and secretly squit people...
constantly ring the bell
Throw eggs\paint\bleach into the open door of the bus depending how much of a sadist you are. Alternetively throw these things out the window at people on the street.
Pay for your ticket using pennies. This not only pisses off the bus driver but also the people behind you trying to get on.
For variation pay for your ticket using a fifty pound note.
Stare intently at someone on the bus, then when they look at you look away.
pretend to be asleep, snorely loudly.