since when

idiom

—used to show that one is surprised and often angry, annoyed, or doubtful about what someone has said or done

"I'm a vegetarian." "Since when?"

"You told me to do it." "Since when did you start listening to me?"

Since when is it okay to cheat?

Examples of since when in a Sentence

Recent Examples on the Web

The powerful hurricane, which blew into the Caribbean as the earliest Category 5 storm since when, was blamed for 11 deaths across the Caribbean as the storm produced heavy rainfall and high winds across the Cayman Islands, Jamaica, Barbados, Grenada, Carriacou, St. Vincent and the Grenadines. —Ahjané Forbes, USA TODAY, 5 July 2024

This Juneteenth marked 85 years since when white rioters set fire to the Lee family’s home in 1939. —Melissa Noel, Essence, 20 June 2024

But since when do sports-media commentators root for ratings above all else? —Sean Gregory, TIME, 10 June 2024

And since when do the hippest people at beginner yoga have inside jokes? —Anna Borges, SELF, 8 May 2024

Others scoffed — since when arepostcards cooler than baseball? —Washington Post, 21 Mar. 2024

After all, since when does conflict and bluntness win you any friends? —EW.com, 1 Nov. 2023

But since when has the holiday card, that stressful annual performance of family joy, been entirely about reality? —Geoffrey A. Fowler, Washington Post, 13 Dec. 2023

To wit, since when do Republicans oppose shoring up U.S. weapons stocks? —The Editorial Board, WSJ, 4 Oct. 2023