the.com/bumper crop

When the harvest is so generous even the farmer gets suspicious.

means An unusually large and abundant harvest or yield, far beyond the normal expected amount.

from The 'bumper' here isn't the car part — it comes from an older use of 'bumper' meaning a vessel or glass filled right to the brim, as in a 'bumper of ale,' toasted full. By the 1700s, 'bumper' had stretched into an adjective describing anything exceptionally large or full to overflowing, and it attached itself to 'crop' to describe a harvest so plentiful it overflowed its containers, figuratively and sometimes literally.

origin
bumper once meant brimming cup, not car part
economics twist
too much supply can crash the price
first recorded
18th century English farming slang
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