For You, Some Jewish Halloween Hexes

May you be a person of leisure, take a daily nap and may the lice in your shirt marry the bedbugs in your mattress and may their offspring set up residence in your underwear.

May you enjoy a good time with plenty of good Vodka and may your blood turn to whiskey, so that 100 bedbugs get drunk on it and dance the mazurka in your belly button.

May you be so enamored of good food that you turn into a blintz, and may your enemy turn into a cat, and may he eat you up and choke on you, so we can be rid of you both. 

May you turn into a centipede with ingrown toenails, may onions grow in your navel and may you lie in the earth and bake bagels.
http://www.aish.com/j/fs/Yiddish_Curses_for_the_New_Millennium.html