piss yourself (laughing) spoken not polite British EnglishBrE to laugh a lot, especially when you cannot stop laughing 笑破肚皮They were all copying my accent and pissing themselves laughing. 他们都在模仿我的口音,肚皮都笑破了。
piss yourself (laughing)• He felt very cold, and he had pissed himself.• We both pissed ourselves laughing afterwards, wondering what all the fuss was about.• No older girl has ever pissed herself on account of Laverne before.
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