Warp Factor Zero

Bones rattled around the Infirmary until Jim came down and opened the door.
“Have you figured out what the problem is?” said Jim, looking down at Spock, who was laying on an examination table.
“It’s his damn green Vulcan blood,” growled Bones. “I don’t know whether he’s got a nosebleed or a runny nose.”
“It’s just a runny nose,” said Spock matter-of-factly.
“Then why were you shrieking for a tissue and pinching your nose?” said Bones.
“It’s… the… Vulcan Nose Grip,” said Spock. “Simple logic.”
Jim laughed, and Bones punched him in the nose.
“Now that’s a nosebleed,” said Bones.