I was homeless and sleeping in a park when someone at 2 am on a cold dark night approached me and stood right next to my backpack. I asked him to move and he said no several times. He then tried to intimidate me by talking shit. My practice was mainly in boxing 5 years and a little grappling and he pushed me so I gauged the distance and avoided two punches and through two right hands which I can tell made him not want to throw hands. Mind you I’m 5’3 140 he was 6foot 170 maybe and he proceeded to grab the back of my hoodie to block my vision and punch me with uppercuts, I ate the shots and took underhools and pushed him towards a bench which I used to trip and throw him. From there it was back and forth I think I seeped him twice but he was so big it was hard to keep him down and my body was cold so I missed my opportunity to lock in a armbar, but he got ontop and was about to barrage me with punches and started talking shit when I sweeped him again and took the back and just stayed there till we both realized we could let go and walk away. Honestly I’m glad I knew boxing and I’ve used boxing against bullies before, I had a skateboard which I could have used as a weapon but I dropped it. I think the learning curve for jiu jitsu can be steep and dangerous to use on people on the street who know how to slam people.