Geddy always puts silly things on stage. The tour before (Vapor trails/rush in rio) he had dry cleaners and periodically they pulled shirts out of them and threw them into the audience. All the shirts are red and you still see them time to time at shows. They have the sun/moon logo on the front and on the back they say "This shirt came from dryer #2" or some such. They have also had the giant inflatable rabbits on the presto tour not to mention videos for pretty much every song running the gauntlet from cheesy to hiliarious. On the R30 tour they had Jerry Stiller wake up in a lounge chair to start the show, or last years south park kids playing tom sawyer with a pun on time signatures and alternate lyrics:
Cartman: I\'m geddy lee, I wrote the lyrics. ready? 1--2--3--1234567-12345-1--2-- a modern day warrior of mean mean stride, here comes tom sawyer down the river with a black man"
Kyle: Cartman, those are not the words!
naturally of course though, it was neil and not geddy who wrote the lyrics.
THey just like to have weird things happen on stage like this that they ignore or pretend are perfectly normal.