How ironic: The "84-foot death defying raft plunge" at Universal Studios was built without a proper plunger -- allegedly -- because a woman says she slipped and fell on overflowing toilet water adjacent to the ride.

In a lawsuit filed in L.A. County Superior Court, Karen Roberts claims NBC Universal was negligent by not maintaining a proper flusher near the entrance to the Jurassic Park ride.

She wants more than $25,000.