The maid screaming *spoilers*
I get how the maid is suspicious about the "delivery" and doesn't open the door. But when she looks out the window and sees the guy standing outside, she screams in horror — even though he's not brandishing a weapon.
"Oh my God, he said 'delivery,' but it's a white guy with crazy eyes in a sleeveless vest and he's not holding any package! AAAHHHHHH!!!!"