It's hawt out.

Doesn't ever happen really in Boston, but I will answer anyway. :P Most of the time I will go swimming at a friends pool or just stay inside with the AC on.

I may fan myself, but it'll be ineffective and I'll end up losing energy. I'll sit in the shade if I can, assuming it's outside. That's really the most I'd do. Otherwise, I'll probably complain to myself about how hot it is and that'd be that.

Other than always having my water bottle with me (even around the house) or maybe taking a cold shower, all I really ever do is wait it out. There isn't any AC in my house, so I find putting on the fans just blows the warm air around even more. Oh, and ice cream always helps out a bit, too.

Complain a lot and have a cold shower, works for me :3 Plus I know this sounds stupid, but closing your eyes and picturing a cold place like a huge snowy mountain or something does seem to help too xD As run your fingers lightly across your skin so it tingles and makes you shiver, that feels cold too :3