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1) Suffering from symptoms making one both cranky and temperish, such as an old man.

2) The enjoyment of having fingers stuck up the anus.
1) "Ever since he caught LaPlantism he just sits on his porch and yells at kids as they walk by."

2) Nani Donut: "I heard you had fingers up your butt."
The Dress-Code Bear: "LaPlantism"
Nani Donut: (in a sad tone) "LaPlantism indeed."
by Samurai - Anji May 07, 2007