I went to give fuel to my car but the fuel cap did not want to unscrew i unlocked it as usual but it kept not coming out as if it was stuck. I think the lock got stuck. How can i remove it from there?

Big Screwdriver

Yes, I've never heard of any technique other than brute force and ignorance doing the biz in that situation. But petrol siphoning is out of fashion at the moment - I usually just force the thing off and then Araldite it back together as a non-locking version!