it's a suck啥意思

做英语听力中听到的，不是在影片中听到的，我估计是有点儿遗憾的意思，望高手解释

It's not going to suck itSelf it's a party It's a cake.这是什么意思？ It's a deal什么意思？ it's a small world it's a rainy day韩文歌 It's a hard life It's dark Miss a go. It's a please.翻译 It's a piece of cake