A "Back Alley Abortion" is the crude name for a snort of cocaine followed by a shot of Fireball whiskey. The cocaine is a pinch on the outside of the hand when making a fist, between thumb and forefinger, similar to where salt goes when doing a shot of tequilla.
Alternatively, you can dust the rim of the shotglass with the cocaine. (less common)
Nicolle has had one too many Back Alley Abortions and should really take a fucking break for a while.