And, dammit, how I hate to say this dumb phrase is right!
So, here I am, without my laptop and wondering how the heck will I draw. Suddenly, an idea came to my mind which I just HAD to doodle it and I was thinking 'hey, is just a doodle, I'm sure there's free app for my phone for that.' I went to search and found Autodesk SketchBook... And it's freaking awesome! I'm nocking myself  out with it. 
In a more personal side, I'm even enjoying drawing on my cellphone. =3
Kind regards!