A physical characteristic that afflicts a disproportionate
number of women in the
Canadian province of Nova Scotia. Its primary quality is a flatness of the buttocks that is so extreme that the tops of the thighs appear to
slide into the shoulder-blades without significant outward interruption.
He: Look, there's Bob's really cute girlfriend. She's from Halifax, Nova Scotia.
Friend:
Yea, she's cute alright, but she's got Nova Scotia slide
bum.
He: Yikes! Now that she's turned sideways, I see what you
mean: she's got practically no ass at all!