Most broken combos

Hello! I was reading an older version of "Ordem Paranormal," a Brazilian horror and action RPG, and I noticed a funny combo. The gasoline canisters had negligible weight and no inventory limit, allowing you to carry an infinite number of them and throw them around the room without an action cost. The result was thermonuclear explosions with fuel. Has something so stupid and absurd ever appeared in other systems? I'd like to know what things are comparable to this.