Refers to snorting drugs, derived from sthe idea of snorting something up like a vacuum cleaner.
The term is commonly used in a repeated bit on the Canadian show Letterkenny, between characters Derry and Squirrelly Dan.
Usually partnered with schneef which is slang for cocaine.
Dary - You ever hoovered barnyard schneef? Squirrly Dan - I've hoovered behind the manure pile schneef.
Dary - You ever hoovered schneef off a sleeping cow's spine?
Squirrly Dan - I've hoovered schneef off of an awake cow's teat.
Dary - You ever hoovered library schneef? Squirrly Squirrelly Dan - I've hoovered schneef off of the cover of Gordon Korman's This Can't Be Happening at Macdonald Hall.
Dary - You ever hoovered Sunday school schneef? Squirrly Dan - I've hoovered schneef off the collection plate in the rectory.
Dary - You ever hoovered backseat schneef? Squirrly Dan - I've hoovered schneef off of the headrest of a Pontiac Tracer traveling to SARSfest.
Dary - Ever hoovered backstage schneef? Squirrly Squirrelly Dan - I've hoovered schneef off of Jann Arden's charcuterie board.
Dary - You ever hoovered boat schneef? Squirrly Squirrelly Dan - I've hoovered schneef off of Theodore Tugboat's baseball cap.
Dary - You ever hoovered police station schneef? Squirrly Dan - I've hoovered schneef off a sergeant constable's nightstick.
Dary - Ever hoovered airport schneef?
Squirrly Dan - I've hoovered schneef off a Drakkar Noir display at the hors taxes.