You could say something along the lines of:
"Hey, Friend, what's so good about weed? Why are you always smoking it?"
If he's smoking it for medical purposes, then just drop it, but if it's illegal and he's doing it to "look cool", then I would further ask questions about it.
Answer:
so others don't get germs of others by touching the athletic supplies; concerning the virus going around...
Explanation:
The healthiest serving of meat would be the size of your palm of your hand, according to the health books