Of or relating to the condition of Phosphrousdie Disolutiold Disorder. In most cases the victim grows a third ball to his testicular sack
Oh no mom' I have a case of PDD
by Monkey Baboon December 27, 2003
PDD stands for Pervasive Developmental Disorder. Something that some mentally retarded kids sometimes have.
Timmy has a PDD.
by Alexi August 08, 2003

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