The worst thing you did on someone elses computer

Simply throw out a newly buyed PC out of 3rd floor, just because that person pissed me off...

 

That's called criminal damage. I think that's a wee bit over the top.

 

I flicked the little red switch on the back of a school computer's power supply. Sparks flew - I'd set it to American voltage, which happens to be much lower than our mains power in New Zealand.

 

I peeled a potato on a computer's cooling fan.

It's totally possible.

 

Used a PXE server to install Linux on all the school computers.
Something I'd call a white prank.

 

I remember I used the CPU fan to peel a carrot. There were bits of carrot all over the motherboard. Ops...

 

I was young back then, I used the teacher's computer (while the teacher went away to find something in the teacher's office) to open up youtube links of those crazy screamers that would make you shit your pants.

 

I made a script where everytime you clicked or pressed any key, the computer shut down. Someone else then found my script and put it on a bunch of teacher's computers. He got caught and I didn't.

 

I wonder how ;D

 

I left an x-rated story on my flash drive, which I had written, on my grandma's computer. Two words: BAD IDEA.

It's not a hack or a script or anything, but it did blow her conservative mind out of the known universe. I think it's still reeling from the shock.

 

I left the website www.pingas.com on my friends history on ie But soon afterwards he upgraded his computer to windows 7 and all traces of it were deleted. damn!

 

sudo rm -rf /

But that command was disabled.

 

aw thats poor, you wanna see my history

 

What is www.pignas.com? Scared to click on it...

 

I ate potato chips over someones keyboard.

 

stuck a steak knife through their monitor. 0_o i was really pissed.....it was a nice one to, woulda accepted it as a TV.....

 

the worst ive done is while at school put simpsons porn on a few different peoples drives