A cold days laugh!
I spent the first 25 years of my life living in Montreal. It's the place I consider home and, for so many reasons, it's a city that I hold really close to my heart. That said, If you've never had the chance to travel there in the winter, I will tell you that for eight months of the year the city freezes over and becomes hellishly, intolerably cold. So cold that when I visit, I can't imagine how day to day life continues in those conditions. When I step out into a negative 20 degree day with so much snow falling that you can't see two feet in front of you, I literally can't remember how I survived there for most of my life. When I think back on it, the thing that sticks out the most is that most Montrealers have a really great sense of humor and I think that they must have to or the winter would just bog them down.
So when I meditate about humour from that standpoint, I feel that humour is about surrendering to the moment. Realizing that there are things that we cannot change and that we just have to take lightly or they will weigh us down and we will drown in them.