뭐well, you know, like+하do; be+게First-person intention or promise
verb · informalRare#27,412
what for?, what are you going to do with it?A conversational question about the purpose of doing or getting something. It is usually written with a space: 뭐 하게?
KO: 그걸 사서 뭐하게?
EN: What are you going to do with that after you buy it?