My cat's new thing is to punch me in the arm every time I walk by her little perch.

[Mayberry Machiavelli]

What'd I do?

[NightWatcher]

1. Maybe man-up and stop flinching.

You flinch and the cat gets two punches, you big wuss.

[redwitch]

2. Congratulations!

You have become a cat toy.

[Mayberry Machiavelli]

3. Good point. Maybe she likes the surprised little laugh I let out every time she does this.

[PoliticAverse]

4. "I punch it and it makes a noise - it's a toy!" n/t

[TexasTowelie]

5. Has she got you trained to do any other tricks?

[HopeHoops]

6. Failed to pet her, that's what.

[WillParkinson]

7. She's tenderizing you...

When she starts making the marinade I suggest you high-tail it out of there.