A selfie you take while pooping.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

The act of wafting the smell of one's own fart to one's own nose (usually with a cupped hand) in order to savor the aroma.

When you smell yourself.

When you take a selfie while you are forcing out a large poop just to see how cool you look

The act of taking a selfie photograph with your phone while sitting on the toilet and discharging feces from your body.

A selfie of ones self on the toilet used to show disgust in something.