Quoted By:
I've been out of school for 7 years and I unironically think about doing this all the time.
My advice is learn to do makeup with silicone and paint your face to look like Eric Harris.
Sneak up on campus and change in the bathroom. Then have fun like it's christmas morning.
Do everything Columbine style. Sawed off shotgun and a Natural Selection shirt. Play the part up big.
Everyone will be too concerned that you looked like Eric Harris and shot up a school in his style than the fact you shot one up.
Don't do it OP there's a lot of prep work you'd need to do in order to pull it off unless you want to go out this way.