I heard this going into Los Angeles International Airport on SoCal approach frequency:
"Airliner 123, turn right, heading 180, for spacing."
"Right turn, 180. Airliner 123. What's up?"
"Well, our computers have the ability to suggest a specific vector to help us get the required spacing. So the computer says you gotta go south for a while."
"Oh. Well, our computer says that direct to the airport for the visual will work."
Approach (laughing) :
"Yeah, but my computer trumps your computer."