tear 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.
See also: on, tear
Farlex Dictionary of Idioms.

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.
See also: on, tear
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • a whack at (something)
  • a/the feel of (something)
  • (I) wouldn't (do something) if I were you
  • a straw will show which way the wind blows
  • a crack at (someone or something)
  • all right
  • (you) wanna make something of it?
  • all for the best
  • a thing of the past
  • a slew of (something)