The idea behind doing that is to stop you from filtering what you say dude. The idea is for you to get used to lowering the bar for what you have to say and realizing any old bullshit will do. Stupid, mundane, whatever. Asking for ideas from other on what to say is still a form of filtering yourself.
Ever hear of the 'I like salad' opener? Some guy or other decided that it'd be funny to start going up to girls just saying 'I like salad' and seeing what happened. Before long it became a big
PUA thing where people thought it was an awesome game idea, ultimately missing the original point of it.
The point is that it's yours and it's bullshit. If you're taking ideas on what to say from other people in advanced you might as well be using canned material. Free associate, improvise, be spontaneous.