Misc: What food gets its name from the Aztec word xocoatl, meaning "bitter water"?

Questions

who was a bullfrog and a great friend of mine?

who sang 'another one bites the dust'?

when were film audiences treated to a flushing toilet for the first time?

there is enough iron in a human being to make ______?

words containing 'for' a castle or enclosed place?