A fictitious term (for cars, computers, etc.) that is used to trick the un-educated.
In order to boost your horsepower, you must turn on your floopjack system.
1. A mistake;an error
2. A mistake you made while wanting a couple of flapjacks
KID: "I missed the winning shot in the basketball game! Oh floopjack."
MOM: "Hey son, you want to go home and have a flapjack?"
KID: "Thanks Mom. I wanted one depsperatley after I missed the shot."