What is the movie/tv show where they write "not for drugs" on a dollar bill before they give it to someone?

I vaguely recall this happening as a joke in some form of media but all I'm getting are statistics about currency being contaminated with cocaine when searching for it online.

Edit: My dad wants to buy scuba equipment but doesn't know where to buy it or what size he is for a lot of it so I was going to write "For scuba equipment not for drugs" on one of the bills as a joke for his Christmas present.