To be mobbed or overrun by an onward surge of crazed shoppers/zombies - possibly resulting in grave or serious bodily harm.
Schlomo: My goodness, Saul, why are you in a wheelchair?
Saul: Well Schlomo, I was standing first-in-line for the special midnight Walmart opening to buy the Collector's Edition of Trailer Park Barbie. When doors swung open, I was suddenly "Black-Fridayed" down the aisle by rushing crowd of crazed little old ladies and overweight fat leg-ged women with 2 children in tow. Being overrun, I fell to floor and was stepped on, trampled at, and treated like dirt. SO! Lesson is: Never be first in line at a Black Friday sale!
Shlomo: Oh, didja get the Barbie?
Saul: ... ... ... Thanks fer askin' ...