1 definition by Ashley Pomeroy

Top Definition
A sneaky, devious, or just plain lucky chap who manages to be sneaky, devious, and lucky in an endearing way. Often used as a term of admiration.
"Hugh Hefner is the only man alive to have slept with Marilyn Monroe, Barbie Benton, Anna Nicole Smith, and Pamela Anderson - at the same time! The sly dog."
by Ashley Pomeroy April 11, 2007

Mug icon
Buy a sly dog mug!