PS3SouthPark

I'm stuck on the anal probe button mashing part. This is the problem on the PS3 version. The white one I can get past normally but the black one is glitched and no matter how hard or how fast I press I can't fill the bar up. Can you please release a patch for this. I heard some ppl say to vibrate your arm to make you push faster so if anyone has any tips on that let me know