Well, it is not a very good lyric, but, granting just a tiny bit of poetic license, it makes a reasonable amount of sense. He is all alone, and lonely, sitting in a chair, probably in an otherwise empty room. He speaks, but no-one is there to hear him, not even the only thing present, the chair (because its a dumb chair, duh!). It is a, clumsy but fairly clear, poetic image of loneliness.
What is the problem? He is feeling guilty so he doesn’t feel like dancing (something which requires a little joie de vivre to do well). Makes perfect sense to me.
The mother lode for truly WTF! lyrics is, surely, I Am the Walrus, for example:
Semolina pilchard, climbing up the Eiffel Tower.
Elementary penguin singing Hari Krishna.
Man, you should have seen them kicking Edgar Allan Poe.
But really I could have chosen any lines from the song.
Well, that is pretty close to being true. Although you may sometimes hear thunder when it is dry where you are, it is almost certainly the case that is raining underneath the cloud that is actually producing the thunder. There may be rare exceptions, but “thunder typically only happens when it is raining” would not fit the song very well.
Throw some glitter
Make it rain on 'em
Let me see them hands
Let me, let me see them hands
Also, she pronounces “hands” almost identically to “Hanes” (i.e., underwear.) I’m inclined to think this was intentional. The video is also very strange. In my opinion, they are the best song and video of the year.
While I’m no fan of Kesha and I’m not sure I’ve even heard this song, this seems pretty straightforward to me. She’s encouraging the listeners to go crazy on the dance floor and wave their hands in the air. There are probably thousands of other songs saying basically the same thing.