[Spivak]

Maybe, but it’s way more likely that they mean “I took a picture of something with myself in the frame.”

A selfie can really be any picture where you’re holding the camera and in the frame. The subject of the photo can be something other than you.

“I took a selfie with…” means that I and the other thing are the subjects.

“I took a selfie of…” means that the other thing is the subject I’m just in the picture.

[dheera]

No, I very often see people say things like "I took a selfie of my dog" and only the dog is in the picture.