Friends who smoke: cough too much, always spitting up phlegm, smell bad, make you smell bad, can't keep up on the approach, but they have cool voices.
Friends who drink: talk to much, puke in the sink/bushes/toilet, might urinate on themselves, agree to stupid ideas, might give you head- might puke in your crotch.
I think smoking while drinking is the coolest.
Really, I heard you liked giving head and yakking was your favorite combo.