smash cake
n.— «They didn’t want anything to do with the gifts except after they were opened and we had smash cakes made for them and a regular cake made for the company. Kathleen again wanted nothing to do with the smash cake whereas Christopher went to it BUT decided after he ran his hands through it that he didn’t like it and started to cry.» —“Re: 1st birthdays” Usenet: alt.parenting.twins-triplets Mar. 20, 2001. (source: Double-Tongued Dictionary)