Talking with your hands

I was on the way to pick up my brother-in-law from the airport and I took the MRT to Changi Airport.

Sitting next to me were two people talking in hand gestures. And the conversation was a really lively one, judging by the speed of the hand motions. And they were having so much fun, laughing with each other (presumably the result of a joke made by one of them).

It was so refreshing to see a conversation without the need for words and yet being able to convey exactly what you want.

I wish I could do it.