I used to have the trey-deuce
And the deuce-deuce in my bubblegoose
Now I got the Mac in my knapsack

from The Notorious B.I.G. – Party and Bullshit Lyrics on Rap Genius

As a young man, Biggie had a “deuce deuce” and a “trey deuce” (.22- and .32-caliber handguns), which he concealed in his puffy down jacket (the “bubblegoose”)

Now that he is more mature and needs something with actual stopping power, he keeps a Mac-10 in his backpack.

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