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2.
gang rape
Some friends and I pack attacked your mom last night. Then we pack attacked your girlfriend. Wait, you don't have one.
by CheddarDick January 28, 2009
 
1.
To jump someone,or to pack somebody out, fighting as a large group against a single person or a much smaller group.
Marcus: What are gonna do about Tyler not giving us this money?

Paul: get yo homies and pack attack that nigga
by Horror rapper September 16, 2011
 
3.
A pack attack is when two people have a race to see who can put down a 12 pack of the same beer faster
"hey man lets have a pack attack"
by Buddha8328383834 September 20, 2009