I like taking a cold shower on a hot day.
... my housemates last year were not so keen (it was particularly cold water).
You shower with your roommates?
Awesome!
I do a variation of that. Once I'm done in the shower, I re-rinse all of my hair in the coldest water I can get out of the shower to make sure all the hot water's rinsed out and then I make sure every bit of my body's cooled off with it too. I tell you hwut, by the time I'm done I'm hung like a millipede.