What Kind Of Joke Is This?

"I hope I am not interrupting anything important." Stella greeted Adam as she entered his study. She was holding a white tray in her hands which had a black coffee mug placed right in the center. 

"You can never interrupt me, sweetheart." Adam replied to her as he looked up from his laptop. 

"You didn't have your coffee with breakfast, so I brought it up for you. I hope that's okay." Stella said as she placed down the tray on the study desk, next to the laptop. 

The duo was having their breakfast peacefully when a call came through and Adam had to leave the table to tend to it. He was already done with his breakfast but had only grabbed the coffee mug when he had to leave.