A common expression that is used when you're watching a horror movie (like slashers) and you get VERY EXCITED.
Used by the spectators when the hot, smart, usually surviving girl is running away from the psycho and she doesn't have a clue of where the killer is...
This is without the darkest day in a man's life. The bitchaversary marks the exact date that a man's woman, who seems to be a faithful damsel, decides to toy around with another man's meat and swallow his brain rain, which is clearly inferior to yours. This whored out yeti then proceeds to leaving you, for a man she met less than three hours ago, which feels worse than being raped by a elephant in the sub-tropical region of Africa. The bitchaversary also normally marks the day when the honorable man sheds bro tears.
The act of taking a hit but not inhaling it, therefore wasting some of the substance you are smoking. Applies to vapes, joints, cigs, or any smokable drug.
Chris has no idea how to smoke, he keeps on bitchaling and wasting our weed!