Note I specified a grammar, though no semantics. This means sentences, that (usually) will be bizarre and surreal.
Like nonsense phonemes, nonsense sentences will (usually) not have any apparent meaning; though both can be suggestive.
A "random" example might be "acatimpliedoncolourlessphones.rb"
If I link you to http://hastebin.com/daqasujoko.rb you're thinking either "that's a ruby file" or "that's a URL".
If I link you to http://hastebin.com/foodcatsphone.rb you're thinking "what does this have to do with food, cats or phones?"