Starting with "Goldfinger", the notion that Bond and Q would have an often strained relationship with each other was introduced by Guy Hamilton; it continued in the series thereafter. While briefing Bond on the gadgets that he is going to use on his mission, Q often expresses irritation and impatience at Bond's short attention span, often telling him to "pay attention, 007", and Bond's playful lack of respect for his equipment, telling the agent, "I "never" joke about my work, 007". In "Thunderball", Bond can be heard muttering "Oh no" when Q joins him in the Bahamas. A running gag appeared in later films where Q's prized gadget would be destroyed in a mishap often caused by necessity or Bond's recklessness – examples include the Glastron jet boat in "Moonraker" (Bond sends it over the Iguazu Falls to escape pursuit by Jaws), the Aston Martin Vantage in "The Living Daylights" (Bond is forced to prime its self-destruct device in order to evade the Czech police forces), and the BMW Z8 in "The World Is Not Enough" – which is cut in half by a helicopter buzz-saw.