1. A case of classic cheesin in which you cannot wipe the smile from your face. A face boner is usually due to happiness in a relationship but it may be used in other instances as well.

*It is possible to experience a face boner and a real boner simultaneously.
Dude: I totally nailed a smokin' hot babe last night!

Chad: Dude you don't have to tell me, your face boner gave it away!
by j--hole September 22, 2008
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When you get a hard on from seeing a only a cute/attractive face.
Damn, that Ariana Grande pic gave me a wicked Face Boner.
by ABCDsbr January 26, 2018
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One's facial expression when they have a boner.
It is more to do with the horny aura than with an actual boner. There is a slight smile, glint in the eyes and laid back body with the dick as the controller of all thoughts.
I thought Colt would for sure smash that girl! He had such a boner face!
by Sriracha_cake March 5, 2021
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The face one makes when they have what they think to be a great idea and get very excited. Similar to the face made when popping a boner.
Matt had such a boner-face when he talked about his idea to spend spring break in Cancun.
by Broin' out March 16, 2011
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Ones facial expression at the initial sight of something or someone that turns them on unexpectedly
Man I hope that chick didn't see my boner face!
by Forest Webster September 11, 2009
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Noun- this is an insult when someone is fugly, and looks like they have a boner on their face.
That Colin sure is a boner-face.
Dude, how can you think Hilary Duff is hot? She is a major boner-face!
by Aaron C. and Chris D. December 11, 2005
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