Let each one describe any weather or climate with some colourful adjectives.
eg. sizzling hot
chilling cold so on ....
Tell this to the person sitting next to you. This will prevent the person from changing the adjective later.
next now each one will use these adjectives and add thier own name in the end.
eg. sizzling hot Jane, Chilling cold Henry...
The outcome will be funny and hilarious.