"Tony, Kate, Gibbs wants you two in autopsy," they looked up at McGee, their thumbs stretched far away from each other's.

"Now," he said, giving them a Or-Gibbs-Is-Gonna-Kill-You-For-Messing-Around-Unsupervised-Up-Here look.

He sat down at his computer with some files.

Kate and Tony looked at their joint hands warily. Then at each other.

"It's on," they both growled.

Scowling, neither wanting to lose, they stumbled their way to the elevator, each moving their arms and bodies around in an effort to beat each other in this thumb war.