Do we accept questions on "What are the lyrics / what's being said here"?
Does it make a difference if someone is just asking for a word or two?
I think we should allow such questions under the following conditions:
Show your research. For example, demonstrate that neither typical lyrics sites, nor the musician’s site, nor the booklet contain the lyrics for this song.
Or, if there are transcriptions, but you think they are wrong, explain why you assume this; or if you wonder which of the conflicting transcriptions is the correct one, point out the differences.
Be specific. Point to the part you can’t hear (e.g., "the first word in the second strophe", or "right after 'gotta make you understand' and before 'never gonna let you down'", or "from 1:10 to 1:27"), don’t ¹ just ask for a full transcription.
¹ While I can imagine cases where you don’t hear anything at all and you don’t find the lyrics anywhere, I guess we need to be careful not to break copyright laws: quoting the full lyrics is usually not allowed without permission.
Apps like SoundHound can not only find the song for you within seconds, but also if you turn your phone sideways, it will live-stream the lyrics at you in sync with the track still playing on the radio etc.
With that kind of functionality available to people for free, at the push of a button, I see no room for identification questions other than perhaps, at a push, for something so old &/or obscure as to be impossible to find any online source to hear it.
After agreeing with unor's answer, I have second thoughts now since someone asked three of these questions within a few hours (1, 2 and 3).