Did anybody do this?

Hello, people. I’m new to analog synthesizers and I got my Slim Phatty 2 weeks ago, so I’ll ask a stupid question:

The overdrive in the SP is equivalent to plugging the headphone output to the audio input. But what happens if I do that? Can it be done?

Thanks in advance for the answer!

Ive done it before. It’s nothing special

OK, thanks for the information! If it’s nothing special, I won’t bother to do it.