how am I supposed to stroke at the ultra-fast beat at 3:10? it is beyond "as fast as I can"

Watching porn is a bad idea because it gets a bit painful when i try to get hard.

Just wanted to let you know that I've downloaded Processing & your variable metronome and got everything up and running. I'm not familiar with Processing (had never heard of it before, in fact), but it sounds interesting and I'll have a look.