One who is grossly sneaky, and or irregularly efficient at anything "Cloak and dagger", also, one who is generally good with the ladies.
-see also: anyone named Sean, Brendan, Devlin, and Noah, as all people with these names are sneaky (and good with the ladies) by nature.
That Sean is a Sly Casanova.

Those guys, they're Sly Casanovas.

Man, I wish I was a Sly Casanova.

by Michael Burbanks May 13, 2006

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×