I've heard this used (also as 寝ぼけんじゃねぇよ！) in informal situations with nothing but smiles all around. But when I tried to use it in an informal situation with a colleague, I got the distinct feeling ...
I have progressed pretty far in Japanese, but when I construct Japanese sentences, I still get these two particles mixed up. For example, when talking about being inside something, I don't know when ...
Looking at this, it seems that when the word 何 is used with the で particle, it roughly translates into "by means of what" or "in what context." Personally, that sounds like asking "how". Is this ...