A highly concentrated pheromone usually found in cologne or perfume, when applied to the nape of the neck, even in minuscule amounts, the scent will cause the opposite sex to become incredibly aroused with sexual passion and desire.
In Ocean's Thirteen, The Gilroy is when Matt Damon's character, Linus Caldwell (posing as Lenny Pepperidge in disguise), sets up Ellen Barkin's character, Abigail Sponder for seduction; and consequently ends up stealing the diamonds.
Someone whose motivations are persistently ambiguous and might be untrustworthy on the whole. The term is believed to have originated from that of a shifty Soviet scoundrel whom often auctioned himself off to overweight Italian sewage maintenance workers for reasons unknown.
"I just realized last night that David has been purloining all my finely smokedsandwich meats and padding the inside of his tighty whities with them. A true Gidrovlicheskiy, that feller is."