My long term college girlfriend and I smoke often and decided to invest in some weed lube- which was branded as reducing pain and maximizing pleasure. I love anal, and she enjoys it as well- though it takes lots of warming up to take my cock. She usually needs 4 fingers in her ass before its ready for me to stick it in. I have big hands, and am a foot taller than my girl. The idea of my fist next in comparison to the size of her pussy kept me rock hard. I couldn’t stop thinking about it. I poured the lube all over her pussy and ass. There was an immediate difference in her reaction. Today, I only used one finger in her ass to get her juices flowing before I fucked her. She struggled to keep quiet, even more than usual. In between deep dicking her, I ate her out and started fingering her, hitting her g-spot with one, two, then 3 fingers. I noticed that a fourth easily slipped in her wet slit with only moans in response. I started fucking her again, after she greedily begged for my cock. After fucking and fingering two more times, my hand had gotten much further in her pussy. My whole hand was covered in her juices. I pushed slowly and all four knuckles slid in comfortably. I kept jerking my hand back and forth, getting a little deeper each time. I heard her muffled moans in the sheets. Right before I was about to stick my last finger in, she demanded my cock again. I was rock hard from my fist being so close, and while trying my best not to cum, fucked her hole vigoriously. She felt no pain or soreness, which was usual after a bout, even just with my cock. After a couple minutes I couldn’t wait anymore. I took my wet cock out and started massaging her clit. It had become so wet that just by touching her my whole hand was lubed up again. I slowly started putting fingers back in, massaging her clit the whole time. Once I hit four fingers, I stopped and slowly let my fist ease inside her. She moaned but had no idea how close I was to getting it all inside her. I could feel her, and left my hand there for a few seconds to stretch her hole and admire it. I then kept pushing, and even with the resistance of her still-tight walls, the mess of lube and pussy juice let my whole fist through. She grunted and moaned in pure ecstasy. Seeing my hand inside her for the first time was one of the hottest moments of my life. I pulled it back out and then penetrated her, going in all the way again. I fucked her pussy slowly, going from 4 fingers to my entire hand inside. Once I started to get a rhythm, I couldn’t help myself anymore. I took my hand out and stuffed it in her mouth for her to suck it dry. I stuck my dick in, grinding deep into her pussy. I couldn’t believe how tight it still was. Her pussy pulled on my cock until I couldn’t take it anymore and shot my cum deep into her pussy. I could’ve sworn I felt it hit the back if her walls. As I pulled my beating cock out, she lay down on the bed in utter ecstasy and release, and in utter naivety of how far in I got.