Sentence:  So anyway, William Esham and I would be in school, but we were not in the same clasroom, but we rode the same bus home, so when it was time to get on the <WSD>cheese bus</WSD> (in those days we were not assigned seats, but nowadays, you are), I would get on the bus but I would never talk to anybody because I didn't know anybody at that time. 
Meaning of the word marked with <WSD> tags:  A yellow schoolbus, especially the smaller sized versions that are used to transport students with special needs.