笑死我了！

I'm dying of laughter.

I'm dying of laughter!

Source: Tatoeba

Sentence Composition

1 笑死 xiàosǐ
  1. (Internet slang) LOL
  2. LOL
  3. to cause someone to laugh convulsively
2 我 wǒ
  1. I
  2. me
  3. my
=3 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=3 了 liǎo
  1. to finish
  2. (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
  3. (literary) (usually followed by a negative such as 無 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 瞭 liǎo)
=3 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=3 了 liào unofficial variant of 瞭 liào