Man I remember being a kid and drinking a McDonald's shake through a straw. It was so frustrating. My cheeks would be sucked in like a 60 year old actress with really bad plastic surgery and even then I'd just get a little bit.
Jack In The Box had wide, strong, blue straws when I was a kid, and they made drinking shakes easy. Now they have regular, small, thin-walled straws that does the same thing you're describing :-/