to snort cocaine
Taken from the folk song, "Take A Whiff on Me", recorded by Ledbelly, Woody Guthrie, The Byrds, and The White Stripes, among others

To completely miss a joke (often reffering to something said prior to the said whiffage)

The lingering odor from an unpleasant experience, such as someone sticking their feet in your face or farting.
The smell equivalent of a bad aftertaste.

the act of sucking in or inhaling your own fart before anyone else in the room becomes aware of your gaseous emission

An attempt that was a fat distance away from the goal in mind.

when you hitting it doggy style and the air from you thrusting flows up to your nose and you get an unpleasant odor, whether it be from her menstrual cycle or bad hygiene

The lingering malodorous scent of a meal, usually from combination of meat and strong-scented vegetables (onion, broccoli, brussel sprouts, etc.) and/or other seasonings. The odor is most often detected tends to permeate structures where the meal was prepared (e.g., kitchen, living room, bedroom). The smell can also be detected on a person's clothing or skin.