lyrics with spaces work well. e.g. 'God only knows what I'd be without you'
If you like typing sentences use some unlikely ones, preferably personal because people suck at coming up with random stuff.
If you just throw some random thing in these lyrics like "God only knows WOOP i'd be without you" it would make it much stronger, but lyrics are like the thing where you would start building your brute forcer from and also.. how private are you about music that you listen to? I openly broadcast it.