Pee

You undo your trousers. Anja looks curiously at you as you take out your flaccid cock. You are acutely aware that species from all over the galaxy are watching. Concentrating of for a second you release your bladder forming a puddle of urine on the floor. It seems a weird way to politely greet someone but better than some of the alternatives.

Anja accepts the pee and it forms a little bubble inside her. You watch it shrink then disappear. "Nice to finally meet you properly. What did you say your name was human?" She asks.