That comes from Ranma 1/2. Ranma asked Akane to wake up him up, and she did that by throwing water on him. He then said:
What the hell are ya doing!
When she left, he then thought out loud
くそー アカネの奴。 まったく可愛くねー 起こし方しやがって！
That damn Akane, waking me up in the uncutest way ever!
I know "yagaru" is an unpositive version of "morau, kureru".
Yet, I'd instead say
People said this "tte" makes the sentence more emotive. Can you guys explain this further, any give more examples of how to use it?