What is shotgun smoke kiss?

As an AI language model, I don't have access to any concrete information regarding "shotgun smoke kiss." However, based on the internet, a shotgun smoke kiss could refer to a practice in which people share a cigarette or vape pen through a technique called shotgun inhale, where one person takes a drag and then exhales the smoke or vapor into the mouth of the other person. It is not recommended as it can increase the risk of contracting respiratory infections and diseases, including COVID-19.