An insult referring to the act of repeating ones words two or more times, as did Newton in the cartoon Hercules.
Drunkest of 3 Dudes says "Hey, want a beer?" (16 seconds later) "Hey, want a beer?"
Second drunk Dude says "Hey Dude, if you repeat yourself one more time I'm gonna kick your ass."
Third Drunk Dude adds "Yeah Dude, it wouldn't be the first time I saw him kick someones ass for doing a Newton"