Definitions by Max DW.

cup-caking 

adjective: a word used to describe the act of talking on the phone with a significant other with romantic or affectionate content, usually with funny cute nick names or words.

"I love you too my cute lil smootsy poo!"

"Hey, Josh, quit cup-caking and get back to work!"

cup-caking by Max DW. December 4, 2007