Complex sentence: Both Jimmy and Brian have made appearances in "ChuckleVision" with their younger brothers, Jimmy taking the moniker "No Slacking" due to the catchphrase that he constantly has to relay to the Chuckle Brothers.
Split into simpler sentences: Both Jimmy and Brian have made appearances in "ChuckleVision" with their younger brothers. Jimmy is known as "No Slacking" due to the catchphrase that he constantly has to relay to the Chuckle Brothers.