Oops! This kid has dropped his berries.
used to express sudden or surprised dismay, or, sometimes, implied apology, after one has blundered, tripped, broken something, misspoken, etc.
Used to express acknowledgment of a minor accident, blunder, or mistake.
A presumably 'natural' exclamation, only attested since 1933, possibly altered to (from) whoops (attested since 1933)
- object-oriented programming system