This is the 17th in this series of idiom games. A couple of the idioms here have previously appeared in Part 15, so you should know them already!
the icing on the cake
This is used to talk about something that makes a situation, which is already good, even better: I've just found a job, but the fact that it's near my house is just the icing on the cake!
the cherry on the cake
This is not to be confused with the one above, although they are similar. This idiom refers to one final thing which makes something perfect: We were all having such a jolly good time, and when Elaine appeared, that was just the cherry on the cake!
the cake's not worth the candle
This is very often shortened to just 'not worth the candle'. If you're told that what you are doing isn't worth the candle, it means that the results you will get will not be worth the effort you're putting in: If I were you, I'd buy another bike; the repairs won't be worth the candle.
a slice of the cake
To want a slice of the cake is to want a part of what is being shared: Even though all the employees have been promised a cut of the year's astounding profits, they're demanding a larger slice of the cake.
to sell like hot cakes
To sell very rapidly: The new post-mortem John Martyn's album is surprisingly selling like hot cakes!
dropped like a hot cake/potato
'To drop something like a hot potato' is probably more common than '... like a hot cake', but it's useful to know that both expressions exist. When you drop something like that, it means that you're rejecting or are getting rid of something rapidly: When Janet discovered that Tim was an ex-convict, she dropped him like a hot cake.
have your cake and eat it (too)
This is used in situations where there are incompatible alternatives, but you want to have the benefits of all of them: Sam's engaged to Diane, but he's still dating Sharon; he wants to have his cake and eat it too.
a piece of cake
If something is a piece of cake, it means that it is extremely easy: Yesterday's exam was a piece of cake!
Be sure to check out the rest in this series. On the left column, at the top, under 'For Your Browsing Pleasure' click on the '+' symbol beside 'GAMES and QUIZZES', then click on the '+' beside 'Idioms'.