In the movie Pulp Fiction, two separate characters at two separate times make first-name based rhymes.
The first time, Jules says:
My name's Pitt, and your ass ain't talking your way out of this shit.
The second time, the bartender says:
My name is Paul, and this shit is between y'all.
Jules is not named Pitt, and according to IMDB, in the script, the bartender's name is English Bob.
Is there a real-world reference or reason for both of these characters to make rhyming first-name comebacks?