Rick and Morty blunder: Summer falls victim to season 2 mistake | TV & Radio | Showbiz & TV

As Rick and his grandson Morty (both played by Roiland) continue embarking on dangerous, interdimensional adventures, the mad scientist is revealed as an increasingly dark character.

Since then, the series has become renowned for its cynical and unexpected character arcs, as well as its ambitious, surreal animation style.

However, as with all cartoons, crafting each episode is a massive undertaking, and some fans have spotted some strange continuity errors that viewers may not have noticed at first glance. 

One fan took to the online forums to discuss a particularly glaring animation error in season two episode, The Ricks Must Be Crazy.