Throughout TNG's run, Worf had the annoying tendency to state the obvious. My favorite example comes from "The Chase," during the confrontation near the rock-face.
The Klingon Nu'Daq balks at a proposed deal between the Romulans and Cardassians, saying that "there will be no deal" as long as he lives. The Romulan Commander says that he doesn't care if Nu'Daq lives or dies. Worf says, "If you fire, others will also. Many will die."
I always laugh at the line because it's almost too obvious to be worth saying at all. Of course chaos would ensue if someone were foolish enough to start shooting!