shitty grin

A smug or mischievous grin usually used after someone says or does something mischievous or sarcastic.
I knew he had done something just because of that shitty grin on his face
by brownbob September 01, 2010
mugGet the shitty grinmug.

shitty grin

an overly large, or irritatingly smug smile, showing an excessive pride in oneself or one's achievements
her husband was wearing a shitty grin, thinking he had won
by DTinLA May 10, 2011
mugGet the shitty grinmug.