An eel can describe a person and/or his actions as a person. Since an eel is an unattractive creature of the sea it realates to a person who is 'jerk' like and may try to 'slither' his way into certain situations for the hope it will benifit him.
1. A person that is disliked by his looks and behavior
2. A ocean creature that bares resemblance to a snake.
1. Michael thinks Shawn is an eel for asking Jeremy's sister to prom because Jeremy and Michael are close friends with Shawn.
2. When we went fishing we caught an eel, but threw out the sea serpent back into the water.