if one shows respect for LSD its a great time. Head space, dose and setting are really import for first time use. 100ug will give some of the distortions your friend was mentioning. The "breathing" is really common. for me personally. the way the edges of clouds flicker like the flames of a candel and how they morph beautifully in the sky is the best visual. sex is also amazing, my (then girlfriend) and I tripped and banged. somthing about the closeness made us realize we wanted to be together for the rest of our days. really beautiful drug, though I've never had bad or challenging trips on it.