～てあがる・～て（い）やがる

 　　　Although this looks similar to ～てあげる, it's not the same thing. Rather, this is a vulgar and rather offensive version of ～ている.

20. してあがる・しやがる・していやがる・しやがる　＝　している　　(Not 1st Person)

21. いつからそこにいやがった！？
      Since when have you been there!?

Word Note: いやがった is not as in the past tense of 嫌がる (to detest). The verb いる・居る is being used.