Still be a computer record of who did it, though.
Agreed that it wouldn't be considered by Starfleet officers, because they're professional adults & all that.
But the E-D did have a large complement of children on board...though I doubt any of 'em would have the knowledge and/or ability to pull of a stunt like that. Or the testicular fortitude to dump water on the ship's captain...
Would there? Anyone willing pull off such a prank would doubtless have found a way to cover his or her tracks. A Maquis operative could easily pull together a scheme like this.