when a guy sees something he finds sexually stimulating and makes his penis become hard and he wants to fuck whatever it is
Jack: Yo you got a boner dude!

John: I know. That watermelon over there is pretty sexy
Jack: ...
by Marley :) June 24, 2017
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*3 very sexy girls in one room*
Mark:My boner is telling me that all of them are a good choice.
by Jon200105 February 25, 2013
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What occurs when blood rushes to the penis, causing it to stick up. it is also possibly the worst thing to get before a school presentation.
While I was in a school play, I got a boner.
by Sapphire Flames February 15, 2011
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When a guys dick is happy
"Man your boner is happy!"
by VastKilla February 6, 2015
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When the penis expands to it's full length in size
Kiersten : Hey Jake we need to stop by the supply room and get a few things before we start work.
Jake : Ok i'll help you!
Kiersten : Hey baby don't let me fall from this ladder!
Jake : Wow touching your ass and legs gives me a Boner!
Kiersten : Well let's not let it go to waste!
Kiersten : Mmmm! Mmmm! Mmmm!
Jake : Ahhh! Ahhh! Ahhhh!
Chad : What The Fuck Is Going On In Here?
Kiersten : Nothing were just getting some supply's!
Chad : Then why is Jake's dick sticking out of his pant's?
Kiersten : Oh Jake honey your Boner!
Steve : Hey guy's what's going on? Wow Jake nice Boner!
Chad : Well Jake since you got that big Boner why don't you let Steve suck it!
Jake : FUCK NO!
Chad : Fuck Yes or your both FIRED!
Jake : Fine!
Steve : Oh Boy! Mmmm! Mmmm! Mmmm! Mmmm!
Jake : Ohh! Ahhh! Ahhh! Ahhh!
Kiersten : Oh god this is disgusting to watch!
Chad : O GOD DAMN Im getting a Boner myself! Hey Kiersten wanna suck me?
Kiersten : Go suck yourself!
Chad : Well I guess i'll have to fire you!
Kiersten : Fine! Mmmm! Mmmm! Mmmmm!
Chad : Ohh! Ahhh! Ahhh! Ahhh!
Jim : Hey what in the God Damn hell is going on here!
Chad : Hey Jim just having a little Boner fest!
Jim : Chad I would like to see you in my office please!
Chad : Well looks like ive gotta take care of Jim's Boner now back to work assholes!
by SlopNChop June 24, 2018
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A hardening of the penis when secually aroused, if this occurs u must stick it in a vagina until it sneezes out milk
by Hortonhearskeem February 28, 2017
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