since when
adv1
Colloquial, Rhetoric, Sarcastic From what time.
- Since when do I need your permission?
- “[…] We are engaged in a great work, a treatise on our river fortifications, perhaps ? But since when did army officers afford the luxury of amanuenses in this simple republic ? Does your Vehmgerichte pay such extraordinary expenses ?[…]”1910, Emerson Hough, chapter I, in The Purchase Price: Or The Cause of Compromise, Indianapolis, Ind.: The Bobbs-Merrill Company, →OCLC:
2
Colloquial, Rhetoric, Sarcastic (as an interrogative interjection) Used to indicate doubt as to the veracity of a statement.
- The moon is made of green cheese. Since when?