After you flush something down the toilet, you poop as if you want to chase what you have just flushed down moments ago. This poop is referred to as a "chaser".
(Mr.Krabs flushes Plankton down the toilet)
Plankton: I'll get you Krabs!!!! glub* glub*
Mr.Krabs: Heh Heh, and now for the chaser.
by The JoshMeister101 June 16, 2009
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A guy that flirts or has sexual exchanges, with the girls that flirt or have sexual exchanges with the dope dealer for free drugs or a high.
She is a sack chaser but he is a sack chaser- chaser
by Wiseone50 October 7, 2021
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A substance that is mixed in with drugs during preparation before seller them on the street to not only weaken them but stretch the amount of drug available in order to be sold to more customers and make more money.
The buyer rarely has any way to measure how much drug they are actually getting, it also poses a threat because they could be getting more drug than used to in addition to dealers chasing with more harmful substances or other drugs like angel dust.
Heroin and cocaine have been known to be chased with crushed aspirin when sold in powder form since it matches, the buyer rarely has any way.

"She took the smack straight from the cooker without a chaser and overdosed."

by CI_grl March 24, 2008
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to run after a the female sex.
"Hey I finally caught Didi!"
.."You did?"
"Yea man I had to chaser all over the fuckin place, but I caught her!"
by Punkhead May 27, 2005
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redneck who generally resides in a john deere tractor smoking marlby lights
chaser is drunk in the tractor again
by cooter john February 2, 2004
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Short for ambulance chaser, used to refer to ill-regarded and generally immoral personal injury attorneys.
Chasers flock to birth injuries like flies to a tragedy.
by Magnanman August 3, 2005
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when the blunt is rolled shitty and it starts burnin down the side
damn kid, this dutch is chasin like a motha fucka. learn to roll
by BC money shot June 9, 2005
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