But it's all right now, in fact, it's a gas!
Very aptly put in the blog allmusic
The true “gas” of the song, though, is its irresistible funky rock groove. The extended tag, a typical feature of Rolling Stones classics, finds the group harmonizing on the key line of the chorus in low, semi-comic voices that made it difficult, as always, to determine how seriously they regarded their self-perpetuated bad-boy image.
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