Horizontal Mambo

I hate Health class although I enjoy my teacher. She told us men can get "bitch tits" if they use steroids.
They made us run a half mile in gym. Of course I have gym right after lunch. Then after we ran, we had to do sit ups and I did ~40~ in a minute. I felt sick after all of this and walking is now painful. These are the problems I face because I'm out of shape.
Now I have to run some errands for the rest of the night since my mom is working.
Excessive laughter is a symptom of marijuana abuse?