while walking in the hallway, katie and her bud-bud were reprimanded by their teacher for accidently knocking freshmen students over with their headphone wires
a person with whom one shares portable music player headphones with
"while walking in the hallway, katie and her bud-bud were reprimanded by their teacher for accidently knocking freshmen students over with their headphone wires" What is the definition of "bud-bud"?