I know, I'd melt. I can't stand hot weather, it makes me so lethargic, I just want to flop down on a sofa and hope I don't stick to it. Even when it's sunny here, I feel sleepy. 45°C would just be torture. When it's hotter than it ever gets here I just lose all dignity, too - put on swimming trunks and find a place in the shade and spread out indecently to keep from baking. I'd rather be cold than hot, I think. The absolute worst is humidity, though - even when it's raining and warm at the same time here I just feel like sleeping. Cold and rain's not so bad, it's refreshing.
I suppose you get used to it though. Because my dad's president of my school's former pupils' cricket club, we always entertain the Australian pros they get over and their families when they visit; one winter we had a decent fall of snow - it was the first time they'd seen snow except on mountaintops - and they were
freezing, to us it was just a little chilly.