A "slice of the cake" is a portion or piece of something that is typically shared or enjoyed as a treat. There are several synonyms that can be used to describe this type of portion, such as a "piece of the pie," a "chunk of the loaf," or a "wedge of the cheese." These phrases are often used in the context of sharing or dividing something up evenly among a group of people. Other phrases that can be used to describe a similar type of portion include a "slab of the meat," a "hunk of the bread," or a "portion of the dessert." No matter what word or phrase is used, the sentiment remains the same - enjoying a delicious treat with others.