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the act of injecting a drug into your veins.
I've been slamming heroin for the past 2 years.

I'd rather slam coke than snort it.
by ether_synth May 01, 2007
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A southern term for taking a shit or dropping a duece so to speak. Technically slamming means a massive shit, which in most cases is painful to experience. Due to the fried diet of the south, most slams have large amounts of screaming, moaning, crying, praying, and begging. Many who experience such slams change religions 2 or 3 times and in some cases have even found Waldo during the ordeal. Throughout most of the slam the one taking the slam, also called the slammer, will have slam material better known as reading material to occupy the duration of the painful event. 80% of the time this slam material will consist of up-to-date sports information and news. Though everyone has to live through painful shits it's mostly males who get the brunt of this force. More often than not, males who take slams will have socks on and will keep their phone within an arms reach incase the fire department or medical assistance is needed. It is estimated 1/3 of slammers hallucinate and/or black out due to the amount of pressure put on the rectum and anus.
Wow, I can't believe this guy is slamming in my girlfriend's bathroom.
by The Informant99 January 03, 2012
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A term used by postmen (mailmen) in the U.K for mail that is purposely not delivered, usually for top floor flats.
This pratice is not endorsed by the Royal Mail but is common place amongst posties, especially on a Saturday in an effort to secure an early finish.
Slamming involves reintroducing the letter into the mail system the next day back at work.
The undelivered item is refered to as a slammer.
John the postie wants home for 10, he's going to be slamming all the crap for top floors today.
by Postal Avenger July 11, 2006
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The action of violently penetrating a vagina with your penis. So violent that it is heard by neighbours and passers by.
Jemma: *Yawn*
John: Why are u so tired?
Jemma: Ah i was kept up all night by Connor slamming Katie.
by Slamster May 27, 2010
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Filling a filthy whore's pussy with your swinging meat dangle.
Stuffing some dripping meat drapes with your blue veined custard chucker.
"This bitch wanted to slam, but I didn't have a jimmy hat...but I slammed it anyway"

"I jus took you to a fuckin $30 a plate dinner - are we gonna slam or what?"

"I was slamming the hell out of this skeezie..."
by bTreezy October 25, 2006
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another word for Sex, but with much more enthusiasm and feel to it
BOB-yo i was slamming that babes wazoo like ten mins ago

ROB- Yo lemme hit it next
by TamilSoul October 09, 2006
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