Question: The Ricks Must be Crazy is a reference to a South African comedy film that was written and directed by who? 

Context paragraphs:
The Gods Must Be Crazy: The Gods Must Be Crazy is a 1980 South African comedy film written and directed by Jamie Uys.  Financed only from local sources, it is the most commercially successful release in the history of South Africa's film industry.  Originally released in 1980, the film is the first in "The Gods Must Be Crazy" series.  It is followed by one official sequel released by Columbia Pictures.

There's a Zulu On My Stoep: There's a Zulu On My Stoep (in other countries, Yankee Zulu) is a 1993 South African comedy film by the comedy filmmaker Gray Hofmeyr starring Leon Schuster and John Matshikiza.  It has received considerable popularity and a cult status in South Africa and Eastern Europe.

High Fantasy (film): High Fantasy is a 2017 South African comedy film directed by Jenna Bass.  It was screened in the Discovery section at the 2017 Toronto International Film Festival.

Running Riot (film): Running Riot is a 2006 South African comedy film directed by Koos Roets and stars Bill Flynn.  The cast includes Paul Slabolepszy, Vanessa Harris, Robin Smith, Nazli George, Brendan Gearly and Joey Rasdien.  It is based on a play by Paul "Slab" Slabolepsky.

Oh Schuks... I'm Gatvol: Oh Shucks I'm Gatvol! , is a 2004 South African comedy film written, produced and directed by Leon Schuster.  He also stars in the film alongside Alfred Ntombela, Gerry the Clown, Bill Flynn and Al Debbo.

The Ricks Must Be Crazy: "The Ricks Must Be Crazy" is the sixth episode in the second season of the American animated television sitcom "Rick and Morty", and the seventeenth overall episode in the series.  Written by Dan Guterman and directed by Dominic Polcino, the episode first aired on Adult Swim in the United States on August 30, 2015.  It is speculated that the title of the episode is a reference to the 1980 film "The Gods Must Be Crazy".

The Gods Must Be Crazy II: The Gods Must Be Crazy II is a 1989 South African comedy film, a sequel to Jamie Uys' 1980 comedy film, "The Gods Must Be Crazy", and it is the second film in "The Gods Must Be Crazy" film series.  It was made by the Weintraub Entertainment Group and released by Columbia Pictures in the US and released in the rest of the world by 20th Century Fox.  The film was released in the United States on 13 April 1990.

You Must Be Joking Too!: You Must Be Joking Too!  is a 1987 South African comedy film directed by Leon Schuster and produced by Elmo de Witt. The film has bean music composed by Johan van Rensburg.

Soweto Green: Soweto Green is a 1995 South African comedy film directed by David Lister and starring John Kani, L. Scott Caldwell and Casper de Vries.  Following the election of Nelson Mandela as President, a middle-class American couple relocate to Johannesburg to help build the new society.

All the Way to Paris: All the Way to Paris is a 1965 South African comedy film directed by Jamie Uys and starring Uys, Bob Courtney and Reinet Maasdorf.

Supporting paragraphs: The Ricks Must Be Crazy The Gods Must Be Crazy
Answer: Jamie Uys