Yes

Seeing her clit gives you an idea so you hurriedly reach down and pinch it between your thumb and forefinger, almost like a crab.

"Hey! Be careful!" she squeaks out once you've got her design flaw in hand.

"Hm, maybe, not maybe not... remember when you said that you wanted to pop a guy's nuts? Well it looks like you're gonna lose something of yours first!" you shout before violently clamping down on her clit.

You continue to squeeze harder and harder causing her to scream and cry until eventually...

Squick!

You feel her clit turn to mush in your hands and you see your sister spasm and pass out. Honestly, it's such a good feeling that you can't help but want to feel it again... good thing her friends are coming over later!