nail chewing >> I've mostly gotten over it but I tend to do it when I'm thinking really hard about stuffs >>

;>> Whenever I get crumbs on my fingers... I blow on them. To the point that I sometimes get lightheaded. XD;

chewing on the backs of pens/pencils/markers, i tend to do so when drawing

lol i chew on the backs of my pens too xD　 BF gets so mad when i do it to his.