To grab a fleshy part on another's body, particularly on the underside of the upper arm, squeeze tightly, and then pull your fingers loose without loosening one's grip. Creates a bruise identical in appearance to the one produced by the bite of a horse.
Mr. Jones sent Bill to the office for giving other kids horsebites, noting that such severe bruising could cause blood clots.
When someone grabs right above the knee with a bit of force and squeezes with 2 fingers, the other person feel they want to shake their lag or they will jump