What you would call someone who is an over-achiever when it comes to being environmentally friendly. Like a vegan who shoves it in your face is a perfect example of a pollen jockey. Annoying hippies, vegans, or environmentalists are considered pollen jockeys.
Waiter: What would you like to order?
Annoying vegan: bread and water please. Gluten free...
Me: I'll take the serloin medium rare please.
Waiter: Should be out in 5.
Annoying vegan: So I bet you really feel good about being the reason all these innocent animals are dying. You probably support deforestation and using only nuclear energy!Enjoy your fatty steak asshole!
Me: Quit being such a pollen jockey and enjoy your food. Or.. Your bread and water (facepalm)