Nobody knows exactly, can be anything from holding hands to having anal sex. Pretty sure it drives most normal people insane
Bro: yo did you hear, hoe from our school hooked up jock?
Me: No. What did they do?
Bro: They hooked up
Me: Okay but bro, like, what the FUCK DID THEY DO?
Bro: How the hell should i know, i just heard they hooked up! fuck

(and now i searched for what it means on UrbanDictionary.com and still couldn't find an answer)
by Bob Marusi October 10, 2011
Get the Hooked up mug.
to join together, to acquire through ceretain channels, to obtain, to fuck.

Usually in reference to drugs, a good deal, or getting laid.
"I need to call my hook-up."
"Go call your hook-up."
"I gonna get my hook-up tonight, yo."
by deathtobees February 18, 2004
Get the hook-up mug.
to have sexual pleasures (making out, fingering, oral, or sex) with someone your not going out with, or no strings attached. can happen mulitple times, with one girl.
"dude, you gotta hook up with Kaley tonight at the party."
by chillerxoxo July 19, 2009
Get the Hook up mug.
Connections.Contacts.Also deals or arrangements involving drugs mostly.
I was such a crackhead i had to put my list of hookups on cd rom.
by the tweaker February 16, 2004
Get the hook-ups mug.
depending upon the region it generally means two people either made out or fucked.
"Did you hear about Mary and Joey? They hooked up last weekend"
by billybobjoebobsteve August 4, 2005
Get the hooked up mug.
to hook up is to do anything from make-out to have sex, with someone you are not in a relationship with
I dont think i'll ever hook up with him, even if im drunk
by hookup hoar October 10, 2005
Get the hook up mug.
any form of getting some type of action, such as, making out, feeling things, or oral pleasure or sex between 2 people. "A hook up" is whats referred to as doing those things when your not going out with anyone
Guy:"yo, i hooked up with kristin last night!"
Guy 2:"Nice, what did you do?"
Guy1:"we only got to third"
by A jerzy boy December 6, 2003
Get the hooking up mug.