The boobs of a big breasted woman.
Hey bro, did you see those flappy-happies of that hot girl?
1. Exaggeration of the word 'Happy'
2. Often used in a birthday wish
3. characterized by or indicative of pleasure, contentment, or joy.
"Have a happy flappy birthday!"
Can be used as a 'messy birthday wish' as in: "Hope you have a happy flappy birthday. Lots of slobbery kisses, Mr. X"
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An expression used to describe a vagina.
Lianne: Are you pulling into Mr happy's flappy garage tonight? Fuels on me ;)
James: Yes.
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