Bring X to its Knees

/briŋ eks {tə, tu̇, ˈtü} {its, əts} nēs/

v. To present a machine, operating system, piece of software, or algorithm with a load so extreme or pathological that it grinds to a halt.

"To bring a MicroVAX to its knees, try twenty users running vi -- or four running EMACS."