A small, dwarf-like person (much like an adult version of an ankle biter
) who may or may not be rather obese. When there are no vacant seats on the bus this person has to cling to something, yet, is barely tall enough to reach a bar to hold onto. As the bus turns and thrashes violently, they slide around, using their arms to grab bars, people, or anything to remain standing... just like a monkey would use tree branches.
They are usually quite hairy.
*Short, chubby and hairy man gets onto bus. Bus takes off and he begins to slide about and swing his arms...*
Nicole: THERE'S ONE NOW!
Katy: A BUS MONKEY!?