While I agree that it doesn't really make sense, I Sniff My Own Butthole All The Time's trick is a fakie, or half-cab, frontside boardslide. We tend to call what looks like a fakie ollie to switch frontside noseslide a fakie backside tailslide, and what looks like a fakie ollie to switch backside noseblunt a fakie frontside bluntslide. This is pretty backwards (lol) but I think it helps to think of this nomenclatural convention originating from vert. On a ramp, if you approached the coping backside, did a frontside half-cab into your slide, it would feel much more like a frontside boardslide than a backside boardslide. I think?