Your arms are tan...because you probably don't hold your head up at the sun when you walk. Your head shadows itself, and in the sun people generally tilt their head town a bit naturally, so it's less exposed than your arms.
I enjoy being a goofball and making incredibly ridiculous faces in pictures, I work as a cook in a facility for mentally ill to come and be around others like them, and I love goofing around and having fun :).