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1. Slamming
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.
2. Slamming
Funky/Cool
That t-shirt is slamming
by Egg Jul 18, 2003 share this
3. slamming
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..."
4. slamming
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.
5. slamming
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
6. slamming
To graffiti in a conspicuous or risky area.
I was out slamming this was by the mall last night and had to run because some fool spotted me!
7. slamming
The act of sex... rough sex with a whore most of the time or a new girl
I was slamming that girl good last night
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