A relative or a friend comes to visit and annoys everyone
And one of the main characters fail to recognize how foul that relative/friend is.
A relative or a friend comes to visit and annoys everyone
Nosy member of the cast mishears a conversation they shouldn't have been listening in on. Hijinks and hilarious misunderstandings ensue.
Side character is jealous of main character and spends the episode trying to out do the main character only to realize they have their own unique quirks.
Main character feels left out when they introduce a new friend to the group who gets along with everyone.
Main character thinks their best friend's s/o is cheating or is in to them.
- somebody goes to jail, rest of the cast has to bail them out
Was gonna post this. First thing that came to mind.
You also got the one where a main character just happens to be related to or a friend of a friend of a celebrity. Or they manage to just randomly run into a celebrity.