When insulting someone in this way, you should be speaking in a nice tone.
在侮辱人的時(shí)候，通常會(huì)用一種聽(tīng)起來(lái)似乎很友好的語(yǔ)調(diào)。
A good way to do this would be to use a compliment first then an insult at the end of the sentence.
一個(gè)很好的方式是，先淡淡地表?yè)P(yáng)一句，再罵他！

Things you can insult someone on in English:
在英文當(dāng)中，侮辱人通常從這么幾個(gè)方面下手：
looks or general appearance 外貌
I like those pants. Does your grandma know you're wearing them?
哇我喜歡你的褲子誒，你奶奶知道你把它穿出來(lái)了嗎？
You look like a train wreck.
你看起來(lái)就像火車(chē)殘骸一樣破破爛爛的。

smell or hygiene 氣味，體味
I can smell you from a mile away! When was the last time you had a shower?
我從一英里外的地方就能聞到你了！你上次洗澡是什么時(shí)候？
I can actually see the stink around you.
你都臭到發(fā)綠光了你知道嗎？

intelligence 智力，智商
You aren't the sharpest tool in the shed. / You aren't the brightest bulb in the box.
你不是這棚里最鋒利的工具。/ 你不是這盒子里最亮的燈泡。（你腦子不靈光。）
I envy all the people who haven't met you yet.
我真是羨慕那些沒(méi)有遇見(jiàn)你的人。
If you weren't so cute, life would be much harder.
你要不是這么可愛(ài)的話，生活一定會(huì)很艱難吧。
Did your mother drop you on your head when you were little?
你小的時(shí)候你媽媽是不是摔過(guò)你的腦袋？
Did you eat paint chips when you were a child?
你小時(shí)候是不是吃過(guò)油漆塊？
Did you grow up under telephone wires / under a power cable?
你是不是在電話線 / 電纜下面長(zhǎng)大的？