Cloud watching

When I was a little boy, one of my past time activities with my friends is to sit under a big angsana tree watching the clouds in the sky. We often gazed at the various formation and many times we are able to ascertain ourselves the shape of a particular cloud. This activities had been going on for several years and amongst the funny clouds that I still remembered until now were:

1. Acyclone cloud. The sighting of this cloud was towards the evening and after dinner around 5ish I went down the stair from our bedroom. A group of people standing at the verandah were looking behind the threatre which is basically the Straits of Malacca. All of a sudden, I could clearly see a twirling cloud like what we see in the movie called twister. After about a minute or so, the cloud disappear. I have not mentioned this incidence to anyone but now whenever I said that I saw a twister in the sky of Malacca, everybody though it was a great joke. Is it?