ONGEPOTCHKET: Messed up, slapped together without form, excessively and unesthetically decorated.
OY-YOY-YOY: An exclamation of sorrow and lamentation.
OY VEY: "Oh, how terrible things are". OH VEZ MEAR means "Oh, woe is me".
PISHER: A bed-wetter, a young inexperienced person, a person of no consequence.
PLOTZ: To burst, to explode, "I can't laugh anymore or I'll "plotz." To be aggravated beyond bearing.