Oh No! That sudden 'splat' and your piece of toast lands on the carpet. You are not going to waste minutes waiting to replace it....No, simply claim the 'five second rule,' pick the food up, brush it off and you're ready to eat, right? Science says "I think not!".
Where the origins of this five second rule are still in the dark; Genghis Khan seems to get some of the credit for first implementing the rule for eating food from the floor while others credit the fast food industry, so as to reduce food waste. Both seem improbable!