When you take LSD and then rub coke on your gums. This numbness caused by the cocaine, mixed with the psychedelic nature of LSD causes your mouth to feel like there is hair on your teeth.
Man 1: "Ah! Help! I'm hairing teeth! Woe is me!"
Woman 1: "I am calling the police."
Plucking ones ass hair out and placing it on a friend/enemies personal effect, such as a computer keyboard or coffee cup for later discovery. Similar to tea bagging but slightly more pungent.
The act of making a blunder, making a mistake, but in ridiculous way.
The word takes its history in russian language where the verb "опростоволоситься" was originally an act of occasional showing your hairs to strangers, which was welcomed in times of ancient Rus'. Later this verb became a synonym of making of ridiculous mistake.
- Hey, John, this beauty is seeing that you're staring at her. What a simple-hairing!
When a ginger's pubic hair gets caught in the braces of someone who's sucking their dick.
Richard: Dude, last night this bitch gave me a Red Hairing so bad we had to cut off my pubes while they were still in her braces!
Nick: Are they still in there right now?
Richard: Fuck yeah!