The yuck factor is high on this one, but it’s a great malaphor. It was said by someone who was discussing the possibility of getting more money than she anticipated. This is a congruent conflation of “icing on the cake” and “the rest is just gravy”, both meaning an extra enhancement. Perhaps this one describes a little too much enhancement. Coincidentally, I received this malaphor from two people last week who don’t know each other so kudos to Deb Rose and Jonathan Ogle for sending this one in!