Snollygoster, a word for "an unprincipled but shrewd person," is thought to be derived from the word 'snallygaster', which is used to describe a mythical creature from rural Maryland that is half reptile and half-bird.
your such a Snollygoster
by Astronomyst May 31, 2022

A person who can't be trusted.
by PandaGirl xox May 30, 2016

