As opposed to the floor. The phrase says "I threw up a little bit, but small enough that I could keep it in my mouth". Mostly useful in face-to-face scenarios where it's obvious you didn't actually just throw up, but you still want to get your disgust across.

Always a struggle for me. I saw Canada's demo CF-18 at an airshow a few years back and was having simultaneous thoughts of "so this is why we can't afford clean water for our indigenous communities" and "HOLY SHIT IT SOUNDS SO COOL".

In addition to the reasons other people mention, placebo is a helluva drug. If you believe the name brand is better, it may actually become more effective for you even if the active ingredients are the same as the generic.