2/ play the recording in reverse and imitate it (this can take a couple of tries)
3/ then record yourself speaking backwards
It's more fun if in step 3 you do something that would seem weird in reverse, like pouring a glass.
Then you play that video in reverse, and you have something strange: you saying things in a weird but intelligible voice, while the liquid goes back to the bottle.
1/ record your voice saying something
2/ play the recording in reverse and imitate it (this can take a couple of tries)
3/ then record yourself speaking backwards
It's more fun if in step 3 you do something that would seem weird in reverse, like pouring a glass.
Then you play that video in reverse, and you have something strange: you saying things in a weird but intelligible voice, while the liquid goes back to the bottle.