tear (something) on (something)(redirected from tear them on)
tear (something) on (something)
To cause something to become cut or ripped by snagging or abrading it on something sharp, pointed, serrated, or jagged. I can't believe I tore my favorite dress on a loose nail. He tore the sleeve of his shirt on the exposed sawblade.
tear something on something
to rip something on something sharp or jagged. I tore my pants on the corner of the desk. Mary tore her new skirt on something sharp on the side of the car.