Rant from teenagers in a gaggle (5)

I believe the answer is:

geese

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'in a gaggle' is the definition.
(I've seen this before)

I don't understand the remainder of the clue.

(Other definitions for geese that I've seen before include "Christmas birds" , "Water birds related to ducks and swans" , "Long-necked, migratory aquatic birds" , "They come in gaggles and skeins" , "Large water-birds with webbed feet and broad bills" .)

I've seen this clue in The Irish Times.

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