Do not be alarmed by that thin pale man watching you and mushing a ball of clay. To pass the time on his daily commute from Washington Heights to Columbia University, researcher Peter Bulow sculpts miniature busts of fellow passengers on the A train.

He’s sculpted 400 heads in four years, sometimes cleaving at the clay with a sculptor’s knife, while holding on to his bike, swaying inside a rush-hour mob, and studying your face. He’s a psychiatrist. He’s really studying your face.

People are alright with this, except for one man who asked to smell the clay to see if it wasn’t really head-shaped plastic explosives. Everyone’s a critic! (Photo: NY1)