Reference to Mel Brooks' comedic movie, "Young Frankenstein" (1974)--Gene Wilder, Madeline Kahn, Peter Boyle, and Cloris Leachman as Igor, a humpback kinda guy.
After dropping a genius' brain jar for Frankenstein to implant in his creature, Igor picks up an "abnormal" brain. The Monster awakes and nearly kills Frankenstein. When questioned, Igor confesses he'd dropped the first brain and picked up someone else's, "Abby...someone." Abby Normal.
Any girl named Abby.
"Hi, my name is ___, and your's?"
"Abby Normal?" -- (snicker)