剁手
duòshǒu
Literally says
to chop off one's hands
Actually means
to shop way too much and swear you will stop, then shop again
When to say it
Mock despair after an online shopping spree, especially during sales like Double Eleven. You joke about chopping off your hands so you cannot click buy again. Self-deprecating, said to friends with a laugh while five packages are already on the way.
Hear it in the wild
双十一我又剁手了。
Shuāng shíyī wǒ yòu duòshǒu le.
I blew my budget on Double Eleven again.
再买我就真的剁手。
Zài mǎi wǒ jiù zhēnde duòshǒu.
One more purchase and I'm chopping my hands off.