Yes, but the keywords in digital tradition includes "parody", so you can use that to hunt out or to evade parodies, just like you can with "bawdy"

But in any case some of the liveliest songs aren't the parodies but the versions originally collected". Any number of the versions of English folk songs most widely known are toned down versions ("parodies" you could say) re-written by collectors to eliminate the bawdry.

But I'm relieved to see that the keywords section doesn't include the horrible euphemism "adult". I once made the mistake of typing "adult literacy" into a type engine, without putting the quote marks in.