Sunny Dunny.

It IS always sunny in Dunbar. Even the forklifts look happy.
I should, however, tell you that they're not actually happy........they're inanimate objects with no emotions, it's just the way your brain computes the shapes.
Having said that, I'd be fairly certain that there have been no scientific studies regarding the emotional state of forklift trucks and the links with meteorological conditions (with the possible exception of one being undertaken at the University of California) so I can't be absolutely certain that forklifts can't be happy.