you lived in a sorority house with some other girls

well one day you picked up the phone line after hearing loud disturbing coming from the attic, which you assumed was Billy. the perverse phone caller who the sorority girls called "the moaner". you had never met or spoken to billy

you only heard screaming on the phone, so you hung up and went upstairs to find this "Billy" having a manic episode

A horrific impression of what sounded like a baby crying came onto the line, quickly followed by Billy..

“BILLY!!” * He'd shout in some sort of.. impression on his mother's voice*

“FILTHY BILLY!"

"I KNOW WHAT YOU DID, BILLY!”

“Mommy! Mommy!!” He'd sob in an impression of his younger self "I didn't mean to!!"

“WHAT YOUR MOTHER AND I MUST KNOW IS.. WHERE DID YOU PUT THE BABY?!-” He'd exclaim in his father's voice, followed by the impression of his younger self once more

“See, Mommy? Baby's alright..." billy would choke out a psychotic laugh and a sob

“BILLY, NO!!-” * He cries out again, not even noticing you

"DIRTY NASTY BILLY" he laughs hysterically, tearing up