Please pals this picture got me so confused that I don't know if its best posted on jokes or crime or health but I finally thought of health

I've seen this kinda picture severally and I know many nairalanders must have seen it too but I still don't understand what ladies do it for...putting vulcanizers' airtube or panelbeaters' gas outlet in their mouth and passing out the gas from their nose. Please what does it do to the ladies. Is it to increase their throat size or smoking capacity or to flush their chest or what. Need sincere answers please. I really wanna know. Thanks

Guess dy do dat just to feel among...

Dope