2. His birthday was fantastic. He got lots of cards and presents but the icing on the cake was the surprise party his friends threw for him.

Meaning: “The icing on the cake” means an additional thing that makes an already good situation even better.

Перевод: «Вишенка на торте» — это дополнительное приятное событие, которое делает и без того хорошую ситуацию ещё лучше.