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To smoke up is to let another person smoke marijuana with you without payment.
Guy 1: You got bills?
Guy 2: Nah man, I'm dead broke.
Guy 1: It's aight, I'll smoke you up on this blunt.
by Dan March 24, 2005
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verb. (trans.) to share cannabis with one or more people
"Hey, we smoke brad up all the time but he never buys-it's bullshit!"
by Ganja Man February 14, 2005
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To smoke marijuana. By adding the "up" you are differentiating between simply smoking tobacco and smoking marijuana.
"Do you guys wanna go out back and smoke up?"
by escape_from_noise June 05, 2016
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A case of hiccups that occurs right when you light a cigarette. Involuntary hiccups happen right when you take a drag, every drag, making the smoke utterly unejoyable.

The smokeups infuriatingly go away as soon as you're done smoking.
Amy: "How you enjoying that smoke?"

Matt: "Impossible to get a full drag because I got the smokeups." takes drag, inhales *hiccup* "See? Drives me crazy!
by parallel_master September 23, 2017
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To tell someone to 'smoke up' is asking them to hurry up with the joint when they're taking fucking ages with their tokes.
Guy 1: "Is this your 3rd toke?"
Guy 2: "Nah, 2nd."
Guy 1: "Smoke the fuck up, then!"
by Rep August 24, 2004
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To 'smoke up', is to have a hit of cannibus sativa from a bong or waterpipe.
"Do you want to have a 'session' next Saturday?"
"Yo' bruz, I 'smoke up' everyday, its jus' a matter of if yo' wanna be there or not!"
by Diego August 31, 2003
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