1) An animal who wags a lively tail with great motion
and energy, and it is most of the time done
unconsciously or instinctively.
2) A person, or animal who is high-tailing it out
of a place or situation (leaving with great speed);
getting out of dodge; like a bat out of hell.
just about knocks everything over.
2) My friend and I were joking around when we accidentally
knocked over a row of parked motorcycles, so we flail-
tailed it out of there like lightning before anyone noticed.