Upside-down-cross pendants and spiked bracelets were common accessories.

NEWYORKER: The Dark Arts

"The cross was upside down outside the door so when I opened the door it fell in, " he said.

BBC: Graffiti on path

Not least because in the dead man's pudgy hands he finds a gold cross, ornately worked and made to hang upside down in the way St Peter was said to have been crucified.

ECONOMIST: New fiction

Deep Flight Aviator's wings, viewed in cross section, look exactly like an airplane's, upside-down: They're curved on the bottom, flat on top.

FORBES: Cruising Altitude: Minus 400 Feet