Pipe Repair

Pipe Repair by The Dirty Spiders. 
An Object Transformation erotic short story. 

Husbands Bill and Brian travel across the country for Brian's annual work conference. While there, Bill is gonna spend time with his Father-in-Law in Brian's home house. 
Brian apologises for lumping them upon one another while he works, but Bill insists they get on fine and he will enjoy it. 

Object Transformation/Inanimate Transformation (Object-TF / InanTF) is a branch of kink fiction in which people are transformed (or transform themselves) into usable objects to be used by other people.  
Awareness and sentience vary from story to story, or lore to lore. In this story the TF's characters are self-transforming, remain self-aware and capable of communication.