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.
Laying a juicy turd across someone's upper lip. A Tom Selleck can be given manually or if one is particularlyaccomplished, lay a Tom Selleck without the use of one's hands.
"When Jeff passed out, I squatted over his face and gave him a mean Tom Selleck." or "That guy gives one hell of a Tom Sellek."
After a long night of drinking, a Slimy Selleck is the process of passing out on ones own toilet, and waking up with a neatly collected mustache made of pubes from the surrounding bathroom floor.