make the call
official term said when its time to schedule an appointment with your drug dealer aka attempt to hook up
Example:
Paul will need to "make the call" at least one hour before his mistress meets him at a discreet location for a night of heavy drinking and partying behind his wife's back.
Paul will need to "make the call" at least one hour before his mistress meets him at a discreet location for a night of heavy drinking and partying behind his wife's back.