During his speech today at Yosemite National Park, President Obama gave his obligatory warnings about climate change:

The jokes always write themselves when Obama talks about “pollution”:

Nobody leads by example like President Obama!

The president might give the animals one final “clean environment” wave as he flies over in Air Force One on the way back to DC.

This administration’s sense of humor might be its greatest legacy:

We’re on the floor!

Editor’s note: This post was updated to include an additional tweet.