What does it mean for a person to rant and rave?

i think it means when someone's upset about something, they yell and carry on and or complain about itWhat does it mean for a person to rant and rave?
To speak on and on about something you feel passionate for. Users often rant-and-rave about particular topics in the newsgroups. To ';rant'; implies negative feelings about something, and to ';rave'; implies admiration for something.





http://www.netlingo.com/word/rant-and-ra鈥?/a>





Idioms: rant and rave





Talk loudly and vehemently, especially in anger, as in There you go again, ranting and raving about the neighbor's car in your driveway. This idiom is a redundancy, since rant and rave mean just about the same thing, but probably survives on account of its alliterative appeal.





http://www.answers.com/topic/rant-and-ra鈥?/a>What does it mean for a person to rant and rave?
rant = vent angrily


rave = dance to techno music, sometimes with glowsticks
Go on YouTube and type in ';Christian Bale Rant';. That's what rant and rave means. Geez, I hate that man so much.