Common reaction to when someone suggests something completely ludicrous and ridiculous that is generally a bad idea. Loosely an alternative to a facepalm.
Originated and popularly used amongst the youth of South London, like its brother, nao.
A: "I'm gonna ask her out."
B: "Skr; you can't even talk to your sister without fainting, fam, and she is well clapped."
A: "Let's invite Jordan to Croydon..."
B: "Skr; he's like bare awkward."
A: "Safe, can you wait one minute for me?"
B: "Skr; that's sooo long doe!"