For when the pesky CT players jump onto the box following the CT smoke.

Line-up at the bottom left of the stain on the wall
Throw just right of where the two building intersect
+Jumpthrow

Can be a little tricky to find the exact line-up, practice recommended.
Also has the chance to go too deep and fall into ticket if window is already broken, but should still work most of the time.
Good smoke to add to the A push when all CT, Stairs, and Jungle are already smoked.