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"You know, Tony did that once."
Ziva's throaty laughter echoes through the empty weekend squadroom. "No, really?" she asks.
McGee beams. "He did! His face turned beet red and he didn't look at Gibbs straight for a week."
Ziva laughs again, just as the elevator dings to announce Tony's arrival.
"What's got you two all giggly?" he asks, tossing his backpack to the ground.
"You accidentally called Gibbs 'Dad?'" Ziva's hands press against the smooth surface of Tony's desk, leaning closer to interrogate him.
"It was one time," he answers. "Who hasn't done it? At least it wasn't Vance."
"Count your blessings, DiNozzo," a gruff voice interjects.
Gibbs, just in time.
"Hey boss. Dead body?"
Gibbs nods and drifts past, commanding them to follow.
Hanging back, Tony slips an envelope into Gibbs' top drawer. What started as a joke had become tradition.
He turns to find Gibbs watching him. Waiting.
"Happy Father's Day," Tony says, shrugging.
Gibbs smirks. "Thanks, kid."