last chance undies 应急内衣-凯发k8官网

last chance undies is your last pair of clean ¹, reminding you that this is your last chance to wear any unless you get your laundry done. (source: urbandictionary.com)

应急内衣是指你的最后一套干净的内衣，穿上这套内衣就意味着“如果你不想裸奔的话，你得赶快洗衣服了”。

for example:

dude, i gotta do laundry today. i've got my last chance undies on!

哥们，我今天得洗衣服了，我已经把我的应急内裤穿上了。