人生苦短，必须性感 [rén shēng kǔ duǎn bì xū xìng gǎn] Expression. Life is short, [one] must be sexy. This expression is widely used to encourage people to be brave. As 短 [duǎn] “short” rhymes with 性感 [xìng gǎn] “sexy”, I prefer to translate it as “life is short, get some balls.”
Life is short, get some balls-you have the right to remain sexy!