What does "wtmxs" mean?

“我他妈笑死”的缩写，用来形容看到笑得肚子疼、停不下来的程度，适合在面对夸张、离谱或蠢萌的事情时使用。其实就是打字不方便，缩写就是笑死都懒得打全。

ENAbbreviation for 'I'm fucking dying of laughter', used to describe laughing so hard your stomach hurts and you can't stop, suitable for when you encounter exaggerated, outrageous, or silly things. It's really just inconvenient to type, the abbreviation means you're too lazy to type out the full 'dying of laughter'.