It's a classic scene in movie history. Spidey hanging upside-down on his web, while Mary Jane rolls down his mask and kisses him in the rain. Apparently, of the three action-packed Spider-Man movies, this was the hardest scene for Tobey Maguire to shoot. Not because she had garlic breath, or gum on her teeth or anything. It was because rolling down the mask cut off the circulation to his mouth and nose, and he almost drowned from the rainwater.
Doesn't that sound pleasant? Hanging upside-down and near drowning while being unable to tell anyone because you were almost choking to death at the same time? Ahhh...the price artists pay to make our art.
Usmagazine.com: Tobey Maguire: Kissing Kirsten Wasn't Easy