Hi, I'm new.
I haven't watched TV in over 7 months, and before that rarely, so my cultural inuendos are rusty.
But I will try a few
Duke sees a poster for the next Survivor. Someone has scrawled "Survivor suxs! Let it die already!" Duke laughs and says "The tribe has spoken!"
If there is a police station level, when Duke shoots the last of the mutated police officers, he says (in a bad Porky the Pig voice) "Th th th thats all folks!"