I first saw this design on a Tshirt (which I bought, because I loved, and am wearing today, hence the choice to draw this cranky looking little fellow).
But have since seen it crop up eleswhere online.
No idea who the original artist is, so I can't give credit, but I assume theirs was black and white (my own shirt is black and red)... The bubbles are all mine though! lol
If you know who the original artist is, let me know so I can link back to theirs.