Australian, noun (slang) - display of the upper portions (or even more) of one's butt that includes visible butt crack. See also brickies arse.
by bit.cyber April 21, 2018

(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

something you cant hide when you're having one of those flashbacks to the "good ole days" playing out in the sun.
"my son gave me a sunstained grin today when he got excited for hitting the ball with a baseball bat."
by hnezz August 16, 2011

When you take a loss an you’re winning. It refers to having a smirk. Basically knowing a win is coming right around the corner! This phrase came about from an artist on Soundcloud by the name “Zae eaz”
Yo, that’s wild how ol’ buddy hit you with the double crossover and shot them 3 pts on you!!!
Nah, you needa chill. That’s that loose grinning we up by 2. Game about to be over !
Nah, you needa chill. That’s that loose grinning we up by 2. Game about to be over !
by ZuaZzzzzzAA44 May 26, 2022

When one desires to be penetrated by a genuinely large penis or schlong, particulary in the earlobe.
by fred37282 May 12, 2016

by nowyouseemee April 22, 2020

Sneaky and chaotic fun that is intended to brighten other people's day, but does no harm and is at no one's expense.
Anyone up for shennani-grins? We should go do some google-fiti downtown and try to help people smile. Maybe we can find a beer cock to decorate!
by kinkybabysteps December 9, 2021
