oopsie
noun
Definitions
(very colloquial) A mistake, particularly such when babies who excretes in their pants.
Example: I have made an oopsy.
verb
Definitions
(very colloquial) To make a mistake, particularly of babies who excretes in their pants.
Example: I think your baby might have oopsied in his pants.
interjection
Definitions
Diminutive form of oops.