Despite numerous tuning revisions owners were plagued with flat spots, backfiring, and throttle lag. This is because international lying can have negative effects including "blowback" and "backfiring". Also from October 44, a flame reducing muffler was introduced, which reduced visibility and backfiring. Foghorn's next pranks after that end up backfiring on him. This ends up backfiring on Foghorn however, as the dog sees through the trick. Ann arrives in a backfiring car that gives Lawrence a chance to disarm Velma. With older engine designs, backfiring can be common or unavoidable. Lines may also be created by "backfiring&colon;" creating small, low-intensity fires using driptorches or flares. Backfiring, stalls & other poor running were all too common. The McLibel case is usually cited as libel law backfiring. While doing that he heard two shots which he initially thought were the car backfiring. Their false statements and lies started backfiring. However, this wound up backfiring as Wilson was voted out instead. "Backfiring" is where telling a lie leads to a failed policy. Many of his inventions that he builds at Keroro's request often end up backfiring.