To engage in the act of masturbation - applicable to males only.

Source: Albanian bathroom cleaner, "You do automasculina if you no pooosh manneee?"
Henry was busily engaged in an act of automasculina when Susan walked in on him..

Aaron and Danny, both saddened by their girlfriend's leaving them, copiously engaged in an act of automasculina on each other.
by Roishie August 24, 2005
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