Means your plans didn't work out for some reason.

(imagine someone trying to cross one of those suspended wooden bridges and falling through)
"Dude I know you're trying to hook up with that chick tomorrow night, but if that should fall through call me up and we'll play some vidja games."
by evakuate March 25, 2009
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To show up; especially to a party or an event.
Guy 1: Is Lauren gonna be at the party?
Guy 2: She said she might fall through.
by ItsNish May 6, 2013
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fails to happen
"karen's plans of becoming a grammar nazi will fall through when jon proves her wrong."
by pocariboi January 25, 2013
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He hasn't got any money, so it looks like his plan to start a business will fall through.
by toni3700 December 5, 2016
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to make happen. Succeeding.
He made sure to fall through with getting a party bus.
by Galters and Jyna October 11, 2008
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A drug dealer or hookup that is either bunk or doesn't deliver. a Fall-Through is the kind of guy that makes you wait 2 hours for a bag of weed, only to tell you he couldn't get it. A Fall-Through is the ultimate timewaster and ultimately, an asshole.
"Tony can't get weed, he's a fall-through"

"Bob said he has shrooms? 10 bucks says he's a fucking fall-through"
by Matt December 5, 2003
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The sudden whole-body physical sensation of falling down or "through", as if you are sinking into a very blissful elongated state of euphoria brought on by the consumption of alcohol, drugs, weed, caffeine, and any combination.
"Man, wait. Hold on. I'm falling through!"

"Dude, I am falling through right now from drinking and smoking so much!"

"These pills are making me fall through. I feel like I'm falling!"
by WiseSerpent March 12, 2022
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