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1.
1.(noun) The halting of a casual hook-up only “relationship.” The cease the hookup situation you are currently involved in.
2.To be used in lieu of break-up, when there was no official relationship to begin with.
3.(verb) Hang his/her hook up
Ex.(noun)

“Matt’s crazy”
“Yea I know, this needs to be a hookup hangup”
OR
(verb)
“Matt’s crazy”
“Yea I know, you need to hook his hang up”
by The girls in the back- sk+md August 15, 2011