This was the ONLY thing I could see in my head!
In GIMP:
Opened pic, increased canvas size, masked out unwanted portions around snake, found and opened pic of Mowgli as a layer, masked out unwanted portions of Mowgli, created a new layer, used the Pepper brush to fill the layer, used gaussian blur of 50.0 to blur layer, messed with curves and levels of layer, moved that layer to the background, rotated Mowgli, created new layer and added text, created new layer and put an elliptical selection around the text, created a path to make the "pokey" part to the mouth, add the path to the selection, filled with white, stroked selection with black to create boarder around the bubble, flattened image.