To talk and/or be interested in more than one person of the opposite sex. In order to juggle, one must successfully keep all parties seperate from eachother so that no one knows the others exist. Also, the juggler must be able to schedule/plan their events in order to not be found out.
Synonyms: Player, Skeez, Fucker
I am currently juggling three girls right now and they all want to do me tonight, oops