1- To be a
fool, unintellegent, believing one has more intellegence than one really has.
2- To
act or behave older than one
actually is
3- To be very gulliable, ignorant
1- "Jane fell into the fountain while trying to steal coins. Foolio!"
2- "Those fifth graders are wearing make up and purses, they're not even teenagers yet. Foolios!"
3- "
Dan handed in his assignment on male anatomy to his math teacher 'cause
Bill told him to.
Bill made him look like such a foolio!"