Water in pass. floor board

So my Dad went to borrow my car to run a quick errand today, Ive been sick as hell the past 2 days with the flu so I have no desire to get myself to a standing position.
Apparently when he turned on the defroster a splash of water came out from under the dash spilling onto the floor board.
Any thoughts?
 

jeepers94

93 Integra GS
was the car overheating at all? or does it smell kinda funny? if so it probably is the heater core. Thats what happened to my buddies car.
 
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