Answer a question with a question game

I didn't know they had average cup sizes?..do they?
 
I’ve got a lovely bunch of coconuts
There they are all standing in a row
Big ones, small ones, some as big as your head

Based on these lyrics from I've Got a Lovely Bunch of Coconuts, does anyone still doubt that coconuts would work?
 
Isn't it a question of weight ratios?
 
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