An Icy Mascara is when you unleash a huge load of freshly brewed seamen over a girl's eye lash (when her eyes are closed) You then tell her to keep her eyes shut for a couple minutes, when she tries to open them, they will be stuck shut.
Jack: Did you see Tiffany today?
Rick: Nah, Why?
Jack: Man i gave her the dirtiest icy mascara ever, her eye is half closed and it's bloodshot
Rick: Jesus Christ man, it must of been a sticky load.