I don't think the parent was serious, I believe it's a reference to The Internet is a series of tubes[0] [0] https://en.wikipedia.org/wiki/Series_of_tubes http

I don't think the parent was serious, I believe it's a reference to The Internet is a series of tubes[0] [0] https://en.wikipedia.org/wiki/Series_of_tubes https://en.wikipedia.org/wiki/Series_of_tubes