Hmm, not sure on the bird, but it's an idea. I'll think of something. It's gotta be something my GLaDOS isn't scared of or she'd be afraid to make it. XD
repultion would be a bit worse, especially if you get covered in it... it sends you flying, and that is not friendly on the human skeleton... or AI casings i imagine...
... now if it were on her hair only, then it would be funny!