okay so I can’t remember if this was a movie/show because I was young when I watched it. It was either in the 90’s or 00’s and I only remember 1 scene of the movie. Which was the humans meeting the alien in a field in a van and that the alien was short and funny looking but he was friendly and the guys where stoners.
Paul (2011)
http://www.imdb.com/title/tt1092026/?ref_=fn_al_tt_1