look up any word, like cleveland steamer:
 
22.
When two people have sex.
-"Tasha is going home with Mark after the party."
-"Oh, you know they are going to be hooking up tonight."
by Shina Buller November 16, 2003
 
23.
“Hooking up” is a candy coated way of saying were going to fuck. It has been adopted by today`s preppy pop culture in an effort to “candy coat”, glamorize, and make “casual fucking” more acceptable. This same preppy pop culture is notorious for abusing the word “like” and can be found in any Hollister, American Eagle, Abercrombie and Fitch, Express, Armani Exchange ect. etc.
Preppy fake pop culture chick - “Yesterday like me and Jason like were almost “hooking up” in the dressing room at like hollister.”

Real Person - “Hey stupid why don’t you just call it what it is FUCKING, get the hell away from me!”
by Live the Lie November 05, 2005
 
24.
According to Moe's laws of physics, "hooking up" is the act of having a conversation with the opposite sex.
Moe: Hi.
Anna: Hello.
Moe: Hey guys, i hooked up with Anna today.
by pimp October 06, 2004
 
25.
The act of giving drugs to another.
Some crack dealers must have really hooked up some of the losers writing definitions for 'hooking up'.
by Simon Says Go Fuck Yourself March 22, 2004