Is ones ability to ram their rod(deep throat, go balls deep) down their partners oral orafice while simultaneously placing their pubes on the upper lip of the receiver. This invasive procedure produces a beautiful mustache not unlike the most glorious one of all time held by the legendary Tom Selleck.
"Tom put his mouth to the crack and began singing into it in a low voice. They could not catch the words, but evidently Merry was aroused." (J. R. R. Tolkien, The Fellowship of the Ring)
"We went back to his and tried a bit of The Tom Bombadil, but he didn't really have the voice for it. I prefer tenors..."