People at movies eat popcorn ... the more tense and dramatic the story, the more popcorn.
Indyfabz is suggesting that this thread might turn into a highly personalized debate, with people virtually screaming at one another about what is or is not a touring bike, a good touring bike, a bike, a bike tour ..... And then, it is possible people will hijack the thread in numerous directions to debate minutiae about components, destinations, travel services, their favorite bikes from childhood, their favorite toys from childhood, their favorite movies, which movies are about bike or touring, which are not, which should be ...
"Popcorn" is sort of shorthand to "Welcome to the 'Gallagher' comedy special. Cover yourself in plastic so you don't get sprayed and enjoy the craziness."