That's weird, I just cut out a recipe for a key lime poke cake which is basically the same recipe, except:
1 box yellow cake mix
1 3.4 oz pkg instant lemon pudding
1 c. water
1 c. canola oil
4 large eggs
2 tbsp key lime or regular lime juice
and then you make the same glaze with 2 tbsp fresh lime juice, 1 c. confectioners sugar and make holes in cake once it is cooked and pour glaze over it.