change of facial expression to happyness due to an amazing blow job, hand job, or just from having sex.
Guy: "Holy shit!
that was worth a smile babe!"
Girl: "You better of enjoyed that,
i almost ran out of breath!!"
by The man of tate August 25, 2008
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Uncontrollable joy;
A large Uncontrollable grin while having thoughts of pleasure, different from a hard-on because no erection is involved; typically.
Every time I think of my amazing girlfriend I have a raging smile-on.

She is so hot she gives me a smile-on.

I have such a smile-on right now!

oh my god, you get cuter and cuter. You just gave me another smile-on!
by Daniel A. June 21, 2014
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A lot of people smile because they want to. Some just smile becuase they are having a great day, and others just need someone to smile at them. (:

Smiling can come natually to a happy person, but just think when someone is down smile at them and things might be actually better for them.
Smile becuase you want to, not because someone makes you.
by furimfuelle3 February 7, 2010
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the thing/things supposedly offered by McDonald's employees to their customers along with their meals, but usually when inquired about all one gets is a scowl.
"May I have some extra smiles with that please?" asked Jerold in addition to his meal, but his only response was an unkindly frown by the cashier.

Only under the threat of torture will a McDonalds employee give u a smile.
by Jizzo March 4, 2005
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A smile is something precious. If you see someone smiling at you, it often means they like you. If you see someone upset, you should share your smile with them.
A smile can go a long way, so pass it on.
He has an amazing smile.
by iLove...You July 11, 2008
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A mask you put on to hide how dead you are inside.
1: Are you ok?
2: No I'm fine, (*A single tear runs down their face while smiling* ) I'm smiling.
by PowerPup18 October 9, 2018
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