is this even possible ??? (737-400)

I was bored so I decided to play around with the defult 737-400.
Suped up the engines to put out 75000 pounds of thrust. After I landed back at Grissom ARB I taxied clear to the opposite end of the runway, kicked it in full reverse to see how fast it would go.
About 2/3 the way down the runway it literaly tookoff backwards!!!

OOOOOOOOOOHHHHHHHHHH CCCCCCRRRRRRAAAAAAAAAPPPPPPPPP

Suped up the engines to put out 75000 pounds of thrust. After I landed back at Grissom ARB I taxied clear to the opposite end of the runway, kicked it in full reverse to see how fast it would go.
About 2/3 the way down the runway it literaly tookoff backwards!!!

OOOOOOOOOOHHHHHHHHHH CCCCCCRRRRRRAAAAAAAAAPPPPPPPPP

