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4.
To listen to instrumental rap beats loud in your car while your bros are hanging out the windows bangin mailboxes with baseball bats.
Guy#1: Dude what happened to all the mailboxes on this street?

Guy#2: Last night I heard rap beats roll by, them boys were Goonin.
by CheefnFeef October 26, 2011
 
1.
to be acting in an otherwise foolish nature after getting high
man 1: Whats wrong with you man? This blunt ain't done

man 2: Naw man that thing got me goonin.
by D Rizzle April 28, 2007
 
2.
To fool or play around.
Nigga stop goonin around!
by swaggajackablacka November 12, 2011
 
3.
Gettin in your mode in rapping,spittin game to a chick or being savage or being in a semi permenant state or being a goon
This boy making a $100,000 because on the track he be goonin
by Young Reaper Daniel Lock March 02, 2010
 
5.
To literally pummel a female that you want to get close to
I was goonin out on my girlfriend last night because she didn't want to suck my balls.
by gordon oshea April 03, 2009
 
6.
to worry about something, to be anxious
i was goonin out when i thought that my girlfriend was pregnant
by mitch forfa May 10, 2007