Leaving a fresh dump in the toilet when there is a waiting line to use the facilities at a party, sporting event or gathering. Usually accompanied by exiting the restroom with hands raised and high fives for those waiting in line.
Killer...the line was so damn long for the shitter at that hipster party I didn't have time for an upper decker so I had to go with a walk-off home run
by C. Blanche DuBois September 18, 2014
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A situation where, while having sex, a man elects to pull out and ejaculate on a woman's chest. This event is immediately followed by the man leaving the room having said nothing else to the woman. It is often the case that the man does not even get dressed before leaving. This act is most often associated with one night stands, but has begun making its way into longer term relationships as well. Some believe this act is done to symbolize a male's dominance, while others believe that there is no symbolism involved.
Dude, I'm so bored of just shooting off. Next time I think I'm gonna hit a Walk Off Home Run on her just to change things up a little bit. I think she'll appreciate it.

Dude, remember that girl that we saw last night that looked like Katie Perry? Well, I totally jacked a Walk Off Home Run on her last night! She won't be forgetting me anytime soon.
by TroubleMaker002 May 25, 2010
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An inside the park home run is incest.
When Cletus told us he'd scored an inside the park home run, we knew his sister "Ugly Jane" had lost her virginity.
by scodder May 16, 2010
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When the chick you initially thought would ask you to pull out allows you to jizz inside her.

Oh yeahhhh...last night her Ludwig was so tight and I even hit an inside the park home run!
by danman1202 July 11, 2008
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To successfully have sexual intercourse with your own sister.
Billy hit an inside the park home run last night, and now his mother is mortified.
by McCock, the Crime Dick August 7, 2007
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The baseball themed innuendo equivalent to rape.
Bro #1: "Dude I totally ended last night with an Inside-the-park Home run."
Bro #2: "Isn't that illegal?"
Bro #1: "Not when the catcher's drunk!"
Bro #2: "Chyeah, brah!"
by heyguyzzz January 27, 2011
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(verb):

a) to fail to notice something really important
b) to fail to predict something obvious so completely, it is actually ludicrous and painful to watch in hindsight
c) опростоволоситься in Russian
if you want to know whose ox is being gored in the 2016 presidential election, it's the media's since it spectacularly failed to breathe in Donald Trump's home run
by Sexydimma November 18, 2016
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