cools is the word used when young, Japanese girls refuse to refer to one person. "cools" can be a signal that the girl you are talking to wants to talk to you, but wants you to initiate conversation first. It can also be used when a conversation is dying, and is a signal that the girl in question wishes to continue said conversation. Henceforth, be very careful when proceeding.
Girl#1: I saw Veronica at a party with the preps and she's a major soccer player and now she's sitting at the lunch table with the nerds.
Girl#2:She's such a cools.
Cools on Ice is used to describe something as cool but really it is the opposite/ is nerdy. This definition comes from the phrase itself, the phrase is obviously uncool but strangely cool at the same time.
When the phrase is said it is usually the case for the person he or she is with, to say Coolio. This is to show agreement with what the person is saying.
1) Those maroon and mustard bow-ties look cools on ice.
2) Person 1: "I can do a roly-poly in my room with out hitting my head on the wall!"