Yes its true,I've done it many times !!
Think it has something to do with the fact that when you drink from a glass you are also taking in oxygen,whereas when you have it through a straw you are not.
I may be wrong,if I am someone enlighten me !!!!!!!!
Ive heard this is true and it possibly does work i mean i always use straws when i drink so thats probably why im always rolling on the floor haha but apparently its because you drink much faster through a straw which i have noticed is true - when i drink through a straw i just constantly suck the straw but when i take sips its usually every few mins!