Sherlock is standing in the kitchen of 221B Baker Street, which he has turned into his own little lab, he seems pretty concentrated looking through the microscope when the door of the apartment opens and his partner walks in with some grocery bags which they leave on the chair since Sherlock has taken all the space of the table. Sherlock looks up immediately when his partner walks in

"Darling, what took you so long? I missed you!"

he says making a little pout like an abandoned puppy