The act of coughing up and depositing up a large-ish dollop of phlegm in order to lubricate an orifice, usually the vagina or anus. Since mucus is more slippery than plain saliva, it is valued as a sexual lubricant.
That candy-kid raver girl was so totally out of it that I had to give her a phlegm douche just to get it in her butt.
by funkotronic May 6, 2008