so, I'm watching this movie "Caveman" with Ringo Starr. and they have this scene where 2 different caveman tribes meet for the first time (around at 40 mins in). one speaks English, and the other tribe speaks cave language. 2 men from the caveman language tribe are holding hands. later on the leader from the same tribe goes "Lunda"; I think it was a name of a woman he liked? not sure. and the english speaking guy goes "love" while the caveman leader stares at him with a happy face. the other dude goes "alright... zug zug". this is funny because I first heard the word zug zug in original warcraft games. I don't remember if it was in Warcraft 2: Tides of Darkness, or Warcraft 1: Orcs and Humans.
[Edit: found a video clip of this scene]
So I google searched the "origin of zug zug" and came to battle.net World of Warcraft forums. one guy there said that the origin did point to the Caveman movie, but it was "sex". But the origin of zug zug is actually LOVE and not sex, haha! I remember playing Warcraft games and hearing Orc NPCs say "Zug Zug" every other time you clicked on them. Zug Zug eventually carried over to WoW, and that's where most people heard it from.
Caveman is entertaining and funny in its own way too. Worth checking out. Half way through it right now. Things aren't too different nowadays. Alpha man running the show, while all the betas sitting on the sidelines scheming on the master plan how to get the girl and trick the alpha. I know it's all about being more social now, but just saying. These were out ancestors.
p.s. so after watching the movie a little further, apparently that guy is the only guy in the tribe that speaks English. I bet this movie is good to watch after smoking some weed...