If you have an audio program, try saying something at the end of a freinds favorite song, like if your freinds name is Paul, then reverse the track, at the end record, trying your best impression of the artists voice, to say something like "I know where you live, Paul, and I will kill you in your sleep" then reverse it again. If it works like it did for me and my friend, it should go like this...
Hey Paul, i was listening to (song name) the other day and that odd gibberish is starting to creep me out.
Gibberish?
Just listen to the song all the way through, you'll see what i mean.
>listens to song< Wierd, i wonder what that could be.
Meh.
Hrrmmmmm.... I'll listen closer...
>listens to song< .....that's your voice, dude.
Aw, f**k.
What did you record backwards?
I know where you live, Paul, and I will kill you in your sleep.
You're a total nutjob, (your name here).
I know, I know...
okay, maybe not like
that, but... okay, not even close. Sorry to waste your time.
I say exactly what's on my mind, like "Imagine your grandpa in a speedo" or "I eat Jell-O while waxing the table" and my personal favorite, "I drink bathtub water"