It is when the heavy metal dude is talking with silent jay and bob outside the quiki mart and they ask him to do a little berseker stuff ( and the lyrics that ensue kind of butcher the language too). I am going from memory of seeing it about 18 months ago so I probably just screwed the pooch with my description of the scene
Oh ya, the Russian (?) dude at the beginning. That shit was fucking hilarious.
"My love for you is like a truck, BERZERKER! Would you like some making fuck, BERZERKER!"
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"I challenge you to a duel!"
- Senator Zell Miller