後あと足あしで砂すなをかける

expression, ichidan verb

to do something spiteful as one leaves; to take a parting shot

Idiomatic expression literally meaning 'to kick sand with one's hind legs'. Used when someone does something mean or ungrateful right before departing, like a final act of spite.

• 彼かれは辞やめる時ときに、後あと足あしで砂すなをかけるようなことを言いった。

  When he quit, he said something spiteful as a parting shot.

• 恩おんを仇あだで返かえすなんて、まさに後あと足あしで砂すなをかける行こう為いだ。

  Repaying kindness with ingratitude is exactly the act of kicking sand as you leave.