GIMP: Create a Speech, Idea, Thought Bubble

Hello boys and Girls.
What I want to do is make a simple Speech, Idea, Thought
Type bubble, then put text in it.
One or all (if we know how to do the different ones)
the above would work.

Like a light bulb, or
Blowing a bubble with Gum would be perfect.
It does not have to be perfect.
But I don't want a rectangle, or just a oval or elipse.

What is the right way to do this ?
OH, P.S. (If you know)
Do Jpg's retain the "Print size" information you can add ?