I didn't change anything!: interj. An aggrieved cry often heard as bugs manifest during a regression test.

:I didn't change anything!: interj. An aggrieved cry often heard as
bugs manifest during a regression test. The {canonical} reply to
this assertion is "Then it works just the same as it did before,
doesn't it?" See also {one-line fix}. This is also heard from
applications programmers trying to blame an obvious applications
problem on an unrelated systems software change, for example a
divide-by-0 fault after terminals were added to a network.
Usually, their statement is found to be false. Upon close
questioning, they will admit some major restructuring of the
program that shouldn't have broken anything, in their opinion,
but which actually {hosed} the code completely.
-- The AI Hackers Dictionary