fuel had pumped out of the exhaust pipe?

97 nissan maxima 3.0 parked it came back 2 hrs later all the fuel had pumped out the exhaust in the parking lot ? chnged plugs,oil,water,maf,crnk sensor,fuel pump relay ? my wife had jump started a guy earlier that day ? any ideas?

Well i have changed oil, coolant, maf sensor, crank sensor ,fuel pump relay, plugs, just about everything ? my wife had given a guy a jump right before she parked and went into the mall ,came out and 1/2 tank of gas had pumped out the tail pipe in the parking lot ? crazy huh lol