He doesn't get why they're always so surprised. She pulls this shit all. the. time. You'd think they'd be used to it by now, but, no, it's all "Oh my God, Rachel bugged the choir room," or "How could you send that freakishly short frosh to a crack house?" She's evil. Plain and simple. He gets it. Why don't they?
True, she used to be a hella lot better at it. Like when she got that perv Ryderson fired or that time his mom's spark plugs mysteriously vanished & she had to take his truck to work for three days straight. He'd been forced to take the fuckin' bus! He knew it was Rachel. The whole situation had her greasy midget fingerprints all over it. He made sure to slushie her twice a day for a full week after that. It's, like, his version of holy water, keeping the evil in check.
Lately, though, ever since she started getting wet in the panties for Finn, the evil midget was off her game. She kept getting caught and everybody knows that's rule numero uno. Don't. Get. Caught.