Comic sent up king and queen's gormless onlookers (7)

I believe the answer is:

gawkers

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'gormless onlookers' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'comic sent up king and queen's' is the wordplay.
'comic' becomes 'wag' (I've seen this in another clue).
'sent up' shows that the letters should be reversed in order.
'king and queen's' becomes 'ker's' (K for King and ER for Elizabeth Regina).
'wag' backwards is 'gaw'.
'gaw'+'kers'='GAWKERS'

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I've seen this clue in The Daily Mail.

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