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 of wither. withered. ; withering. play \Ëwith-riÅ, Ëwi-thÉ-\. intransitive verb. 1 : to become dry and sapless; especially : to shrivel from or as if from loss of bodily moisture. 2 : to lose vitality, force, or freshness public support for the bill is withering.