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3.
'Plhop' is the antonym of 'Phat.' Below one's standards, unhip, uncool, uncooth. Alternately, doubles as spelling of 'Flop.'
-I hate this car, it's totally 'phlop'.

-The old axiom is true: Give a man a fish, he eats for a day, and that's 'phlop.' Teach a man to fish, and he eats for a lifetime, and that's phat.

My penis is 'phloppy,' meaning, it is not erect.
 
1.
Someone who is chillax, tight, or all around cool.
I'm going to call that kid Phlop because he is just really tight.
by Phlop June 24, 2007
 
2.
The sound made by the clapping buttcheeks of an overwieght stripper.
Dude she's gets extra cash for all the phloping I hear.
by NiggaLlamass November 06, 2013