(adv.) an overt display of self-satisfied smugness when clearly such displays are either undeserved or unwarranted. As if the subject were to smile innocently only to reveal a mouthful of shit to his/her peers.
Kyle: "Did you see that shit-grinning bastard John after he got his paper back?"
Whitt: "Yea he looked like a gloating douche for sure"
Whitt: "Yea he looked like a gloating douche for sure"
by douchenip April 27, 2011
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shit-grinning • shit • shit show • shit cunt • shit-ton • shit fuck • shit-faced • Shit Stick • shit the bed • shit storm