At the protest, a group of people wore tin-foil hats to mock conspiracy theories.

He wore a tin foil hat to the rally, convinced it would block the government's mind-control signals.

At the street fair, a group of eccentric inventors proudly displayed their tin foil hats, insisting they could block radio signals.

She refused to join the meeting without her tin-foil hat, convinced it kept government signals away.

The Foileses arrived early to set up the picnic in the park.

If thou foilest every plot against the king, thy name shall be sung for generations.