I had a bummer of a day.是什么意思？

I had a bummer of a day.

我一天都很烦。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

bummer

n. 失败，<美>无赖，<俚>懒汉，<非正>令人不愉快的经历（事件）；

例句
I had a bummer of a day...
我一天都很烦。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

day

n. 一天，白天，时期，节日；adj. 日间的，逐日的；adv. 每天，经常在白天地；

例句
Avant-garde music to this day has not found general public acceptance.
先锋音乐时至今日都没有得到大众的广泛认可。