An animated and/or speedy repetitive movement that is usually done unconsciously.
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.
1) Our dog gets so excited when he sees us that his flailtail
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.
A person who fucks you out of your plans, makes things go wrong, drains your energy, or uses you for whatever aspect until you no longer have what they want.
We were going camping until that fuckubus slashed the tires on my RV.
It turns out, my wife is quite the fuckubus.
So-and-so is a fuckubus because he used me for a place to stay.