Holy moly... I thnk I would feel awfully sick if I did that... I'm feeling a touch ill even just thinking about it!
I was taught to just hold your rubbish until you find a bin... after all, there are more than enough of them. It's something that I make my kids do... I refuse to hold it for them, they hold it... or put it in their pocket until they find a bin. I really can't stand the concept of littering... something that people just drop for other people to clean up after them... AAAARRRRGH!