Question: what season of the how Rick and Morty did The Ricks Must Be Crazy air.

Context articles: List of Rick and Morty episodes
Lawnmower Dog
Rick and Morty (season 2)
Rixty Minutes
Pocket Mortys
The Ricks Must Be Crazy
List of Rick and Morty characters
Rick Sanchez (Rick and Morty)
Meeseeks and Destroy
Rick Potion No. 9

"Rick and Morty" is an American animated science fiction television sitcom that premiered on December 2, 2013, on Adult Swim.
 The series follows Rick, an alcoholic scientist, and his easily distressed, chronically underachieving grandson, Morty, on their adventures to alternate dimensions.
 These adventures commonly cause trouble for Morty's family, who are often caught up in the mayhem.
"Lawnmower Dog" is the second episode of "Rick and Morty".
 It premiered on Adult Swim on December 9, 2013, was written by Ryan Ridley, and directed by John Rice.
 In the episode, Rick gives Jerry a device to enhance the dog's intelligence, whilst Rick and Morty get lost in the dreams of Morty's math teacher.
 The episode was well received, with approximately 1.5 million viewers when airing.
The second season of the animated television series "Rick and Morty" originally aired in the United States on Cartoon Network's late night programming block, Adult Swim, which premiered on July 26, 2015 with "A Rickle in Time", and concluded on October 4 with "The Wedding Squanchers".
 This season aired a total of ten episodes.
"Rixty Minutes" is the eighth episode of the first season of "Rick and Morty".
 It premiered on Adult Swim on March 17, 2014.
 The episode was written by Tom Kauffman and Justin Roiland, and directed by Bryan Newton.
 In the episode, Rick and Morty watch cable from other dimensions, while Jerry, Beth, and Summer watch alternate reality versions of themselves using a pair of interdimensional goggles.
 The episode was well received and watched by about 1.48 million viewers in the United States.
Pocket Mortys (also known as Rick and Morty: Pocket Mortys) is a "Rick and Morty"-themed role-playing video game developed by Big Pixel Studios and published by Adult Swim Games.
 The free-to-play game was released on 13 January 2016 worldwide for iOS and Android.
 The game is set in the "Rick and Morty" "Rickstaverse" and the mechanics serve as a parody on the "Pokémon" franchise.
"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".
"Rick and Morty" is an American adult animated television series created by Justin Roiland and Dan Harmon, which premiered in 2013.
 It revolves around Rick, an eccentric, elderly, alcoholic scientist who takes his young grandson Morty on dangerous, outlandish adventures throughout the cosmos and alternate universes.
 The following is a list of characters from the "Rick and Morty" television series.
Rick Sanchez is a fictional character from the Adult Swim animated television series "Rick and Morty".
 Created by Justin Roiland and Dan Harmon, Sanchez is a genius alcoholic scientist based on Emmett Brown from "Back to the Future".
 Rick is the show's main protagonist alongside his grandson Morty.
 Known for his reckless, nihilist behavior and his pessimistic personality, the character has been well-received.
"Meeseeks and Destroy" is the fifth episode of the first season of "Rick and Morty".
 It premiered on Adult Swim on January 20, 2014.
 The episode was written by Ryan Ridley and directed by Bryan Newton.
 In the episode, Rick provides the family with a solution to their problems, freeing him up to go on an adventure led by Morty.
 The episode has been well received, and was seen by about 1.6 million viewers when it was first aired on the Adult Swim channel.
"Rick Potion #9" is the sixth episode of "Rick and Morty".
 It premiered on Adult Swim on January 27, 2014, was written by Justin Roiland, and directed by Stephen Sandoval.
 In the episode, a love potion goes wrong, creating a virus that begins to infect the entire world population, making everyone fall in love with Morty.
 The episode has been well received, and was seen by about 1.7 million viewers when airing.
 The title of the episode is in reference to the 1959 song "Love Potion No. 9" by the Clovers.