A name used when a customer does not care if the store sells Coca-cola products or Pepsi products. In name only, the combination of Coca-Cola and Pepsi. When you order a Coke and the restaurant only offers Pepsi. Or the reverse (You ask for a Pepsi and the restaurant only offers Coke).
Taco Bell Server: Thank you for your order. What would you like to drink?
Cust: I'll have a large Coke.
TB Server: Would a Pepsi be OK?
Cust: ((Ugh!)) Yes.
TB Server: Thank you for your order. What would you like to drink?
Cust: I'll have a large Coksi.
TB Server: Coming right up!
A danceplanation is when a person is telling a story or explaining a concept while raising and waving their arms all over the place. At the same time they'll shuffle their feet and occasionally throw a small kick in front of themselves; but, kicking isn't mandatory. In extreme cases both feet may come off the ground.
You should have seen Bob's face when his girlfriend confronted him about that girl he was talking to at the bar. He was giving quite the danceplanation.
Jim, two hours late to work, was giving quite the danceplanation to his boss as to why he didn't have the all the reports written and turned in on time.