A hink pink is a word puzzle where the answer is a pair of rhyming words that match a given clue. "Final explosion" could be a hink pink for "last blast." In this case, "final" and "blast" rhyme and also fit the clue of an explosive event.
last blast
last blast
Lunch punch! :) These hink pinks are HARD!
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cow plow
bear tear
maize craze
ham jam
neat feat
flower shower
sloppy copy
thin grin