Riggs Shoots the Fishtank

Martin Riggs breaks into the office of Arjen Rudd, Minister of Diplomatic Affairs for the South African Consulate. While waving his gun at Rudd and his goons, Riggs pretends to be debating who to shoot, but shoots the fishtank instead and strolls off while Rudd's goons are struggling to pick up the slippery fish.

Example of:
Exploding Fish Tanks