In college, when I smoked my head off and majored in drama, I was leaving the theater one day. This younger dude, Todd, was leaving the building at the same time. He asked for a smoke and I gave one to him, after which we headed off in our separate directions. A couple of seconds later, he called out, "Thank you!"
What I wanted to respond with was a "No problem, man," or a "No sweat, man." What I ended up yelling instead was, "PROBABLY NOT, SWEAT MAN!"