Dumb-ass baseball fan: "Dude, Aaron Rowand is hitting .353 over the past week"
Fan: "SSS, he's hitting .219 over the whole year, he'll back to striking out on sliders in the dirt in no time"
Side side side
Used as a proof for congruency between two triangles, whereby each side of one triangle is equal in length to the corresponding side in another triangle.
The sss congruency proof has no real-world purpose.