two (or more) slices of bread with a filling between them
My definition is how I would like my husband to talk to me when he needs to say something negative.
Say the negative sandwiched between two positives.
"Dana, you look really nice today...you left the garage a giant mess. Have I told you how much I love you?"
We both did it today,and it is really hard to be upset with someone when they end with a positive.