Noun. A girl with an amazingly hot body that has been shaped by yoga. The booty on the megahoni is exceptionally prominent, and stunning.
A: "I'm having a heart attack; did you see that girl that just walked by!?"
B: "Oh my god, I would kill to sink my teeth into that megahoni!"

or

"Mmmm... Look at that perfect ass on that megahoni!"
by Brent rOz March 21, 2007
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