DS9

O'Brien pointed to the runabouts.

"See, Odo. Each one is named for a river. Since rivers are as temperamental as a baby, I base which one I use on how my infant son is acting that day."

Odo nodded, not understanding the need for the ritual, but comprehending its whys and wherefores.

"What if Yoshi is colicky?"

"Then I take the Amazon."

"Sleeping?"

"Then I go down the ramp to take the Orinoco."

"Yes, well--what if he's all happiness and giggles?"

Miles pointed at the upper levels.

"When my baby smiles at me--I go to Rio De Janiero."