There is a difference between a bellypopper and a tummyboomer. A bellypopper flies in the sky making a thubathubathubathub sound with a big rotating thing with several bladelike things. Some call a bellypopper a helicopter. I don't.
A tummyboomer is different. It has a smaller rotating thing on the front and makes a farting sound as it flies. They don't stop moving unlike bellypoppers, which can, and they are often faster. Some call these things airplanes. I don't.
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