You, like most Americans, probably plan to run for president. You have plenty of time, theoretically; the general election is still 22 months away and even if you plan to seek the nomination of one of the major parties, those don't kick off until January.
Rearing is a common measure of activity and exploratory behavior used in the open field and sometimes in certain mazes. Nothing else. But I agree it could be related to very specific behaviors. I like the idea of escape.
Definition: Hatching is the use of fine, parallel lines drawn closely together, often rapidly drawn, to create the illusion of shade or texture in a drawing. Distance may be varied to allow more or less white space between the lines, or lineweight varied to thicken the darkness of the lines.