I would tear your anus apart. First I would insert one lubed finger sliding gently in and out. Then I would add another finger, working your asshole and adding lots of lube so it doesn't hurt. I would work my way up to 4 fingers and then my whole fist. At this point you are clearly uncomfortable and your muscles start to clench defensively against my intruding fist. But it's too late, I've shoved my entire arm up to the elbow deep inside of you. You scream in pain but I'm not finished yet. I tear my arm out of your asshole and you shit and bleed and cry. I start to lube up my toes, ankles, calves and knee. I penetrate you with my entire leg. My nickname among nerdy friends is "Chun Li" because of my thighs. You start to pray. There is a tearing sound. You will never shit normally again.