Johnny Bravo Easter Egg - Devil's Tower?

In the episode where Johnny makes all those famous butt print paintings, at the start he is making something like a volcano and says: "I know this means something!". Doesn't that remind you of the scene in the movie Close Encounters Of The Third Kind where the man (I don't remember the name.) is making a volcano type of thing and he also knows it means something? Well, the volcano is actually Devil's Tower in the movie I just mentioned. It's kind of obvious, but if you haven't seen the movie you wouldn't maybe know this.