1. short bus - Noun
2. short bus - Adjective
short bus (plural short buses)
(US, slang) A shorter school bus, typically equipped with a wheelchair lift, used for transporting children who are physically disabled or who are being educated in special programs, often for learning disabilities.
short bus (not comparable)
(US, slang, derogatory) Stupid; dumb; slow.
Synonym: (colloquial, derogatory) retarded
Dave's not too bright - probably was a short bus kid when he was younger.
Now watch me go retarded, yellow short bus. Lil Wayne