What does the phrase ‘wax ecstatic’ Mean?

This phrase is from a song by the band Sponge and I have always wondered if it has any meaning.

Wax in this context means to grow more; as the moon waxes and wanes. So wax ecstatic would mean to become more ecstatic.

Wax Ecstatic

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RE:
What does the phrase ‘wax ecstatic’ Mean?
This phrase is from a song by the band Sponge and I have always wondered if it has any meaning.

phrase wax ecstatic